51134544 has 80 divisors (see below), whose sum is σ = 150407040. Its totient is φ = 16623360.

The previous prime is 51134539. The next prime is 51134549. The reversal of 51134544 is 44543115.

It is a happy number.

51134544 is a `hidden beast` number, since 5 + 113 + 4 + 544 = 666.

It is an interprime number because it is at equal distance from previous prime (51134539) and next prime (51134549).

It is a super-2 number, since 2×51134544² = 5229483180175872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51134549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16269 + ... + 19155.

It is an arithmetic number, because the mean of its divisors is an integer number (1880088).

Almost surely, 2^51134544 is an apocalyptic number.

51134544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51134544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75203520).

51134544 is an abundant number, since it is smaller than the sum of its proper divisors (99272496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51134544 is a wasteful number, since it uses less digits than its factorization.

51134544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2933 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51134544 is about 7150.8421881622. The cubic root of 51134544 is about 371.1687997087.

Adding to 51134544 its reverse (44543115), we get a palindrome (95677659).

The spelling of 51134544 in words is "fifty-one million, one hundred thirty-four thousand, five hundred forty-four".