51537772 has 36 divisors (see below), whose sum is σ = 106774528. Its totient is φ = 21621600.

The previous prime is 51537769. The next prime is 51537797. The reversal of 51537772 is 27773515.

51537772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51537772² = 5312283885447968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2197 + ... + 10387.

Almost surely, 2^51537772 is an apocalyptic number.

51537772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51537772 is an abundant number, since it is smaller than the sum of its proper divisors (55236756).

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

51537772 is a wasteful number, since it uses less digits than its factorization.

51537772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8230 (or 8217 counting only the distinct ones).

The product of its digits is 51450, while the sum is 37.

The square root of 51537772 is about 7178.9812647757. The cubic root of 51537772 is about 372.1418794377.

The spelling of 51537772 in words is "fifty-one million, five hundred thirty-seven thousand, seven hundred seventy-two".