51403432 has 16 divisors (see below), whose sum is σ = 97740000. Its totient is φ = 25339440.

The previous prime is 51403411. The next prime is 51403433. The reversal of 51403432 is 23430415.

It is not an unprimeable number, because it can be changed into a prime (51403433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44682 + ... + 45817.

It is an arithmetic number, because the mean of its divisors is an integer number (6108750).

Almost surely, 2^51403432 is an apocalyptic number.

It is an amenable number.

51403432 is a deficient number, since it is larger than the sum of its proper divisors (46336568).

51403432 is a wasteful number, since it uses less digits than its factorization.

51403432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90576 (or 90572 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 51403432 is about 7169.6186788420. The cubic root of 51403432 is about 371.8182524524.

Adding to 51403432 its reverse (23430415), we get a palindrome (74833847).

The spelling of 51403432 in words is "fifty-one million, four hundred three thousand, four hundred thirty-two".