51400132 has 24 divisors (see below), whose sum is σ = 103090176. Its totient is φ = 21966528.

The previous prime is 51400127. The next prime is 51400133. The reversal of 51400132 is 23100415.

It is not an unprimeable number, because it can be changed into a prime (51400133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8328 + ... + 13120.

It is an arithmetic number, because the mean of its divisors is an integer number (4295424).

Almost surely, 2^51400132 is an apocalyptic number.

It is an amenable number.

51400132 is an abundant number, since it is smaller than the sum of its proper divisors (51690044).

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

51400132 is a wasteful number, since it uses less digits than its factorization.

51400132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187 (or 5185 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51400132 is about 7169.3885373859. The cubic root of 51400132 is about 371.8102956134.

Adding to 51400132 its reverse (23100415), we get a palindrome (74500547).

The spelling of 51400132 in words is "fifty-one million, four hundred thousand, one hundred thirty-two".