51364544 has 84 divisors (see below), whose sum is σ = 129433320. Its totient is φ = 19998720.

The previous prime is 51364519. The next prime is 51364549. The reversal of 51364544 is 44546315.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 51364544.

It is not an unprimeable number, because it can be changed into a prime (51364549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33752 + ... + 35240.

Almost surely, 2^51364544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51364544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64716660).

51364544 is an abundant number, since it is smaller than the sum of its proper divisors (78068776).

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

51364544 is a wasteful number, since it uses less digits than its factorization.

51364544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 1509 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 51364544 is about 7166.9061665408. The cubic root of 51364544 is about 371.7244654850.

The spelling of 51364544 in words is "fifty-one million, three hundred sixty-four thousand, five hundred forty-four".