51357132 has 24 divisors (see below), whose sum is σ = 133148400. Its totient is φ = 17119008.

The previous prime is 51357113. The next prime is 51357157. The reversal of 51357132 is 23175315.

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

It is a junction number, because it is equal to n+sod(n) for n = 51357096 and 51357105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237657 + ... + 237872.

It is an arithmetic number, because the mean of its divisors is an integer number (5547850).

Almost surely, 2^51357132 is an apocalyptic number.

It is an amenable number.

51357132 is an abundant number, since it is smaller than the sum of its proper divisors (81791268).

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

51357132 is a wasteful number, since it uses less digits than its factorization.

51357132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475542 (or 475534 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 51357132 is about 7166.3890488865. The cubic root of 51357132 is about 371.7065844457.

The spelling of 51357132 in words is "fifty-one million, three hundred fifty-seven thousand, one hundred thirty-two".