51134436 has 48 divisors (see below), whose sum is σ = 140374080. Its totient is φ = 16041600.

The previous prime is 51134431. The next prime is 51134437. The reversal of 51134436 is 63443115.

It is a super-2 number, since 2×51134436² = 5229461090076192, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (51134431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12090 + ... + 15761.

It is an arithmetic number, because the mean of its divisors is an integer number (2924460).

Almost surely, 2^51134436 is an apocalyptic number.

It is an amenable number.

51134436 is an abundant number, since it is smaller than the sum of its proper divisors (89239644).

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

51134436 is a wasteful number, since it uses less digits than its factorization.

51134436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27881 (or 27873 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 51134436 is about 7150.8346366001. The cubic root of 51134436 is about 371.1685383963.

The spelling of 51134436 in words is "fifty-one million, one hundred thirty-four thousand, four hundred thirty-six".