51432278 has 32 divisors (see below), whose sum is σ = 85881600. Its totient is φ = 22990176.

The previous prime is 51432263. The next prime is 51432281. The reversal of 51432278 is 87223415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72188 + ... + 72896.

It is an arithmetic number, because the mean of its divisors is an integer number (2683800).

Almost surely, 2^51432278 is an apocalyptic number.

51432278 is a deficient number, since it is larger than the sum of its proper divisors (34449322).

51432278 is a wasteful number, since it uses less digits than its factorization.

51432278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its digits is 13440, while the sum is 32.

The square root of 51432278 is about 7171.6300796960. The cubic root of 51432278 is about 371.8877903752.

The spelling of 51432278 in words is "fifty-one million, four hundred thirty-two thousand, two hundred seventy-eight".