51632402 has 4 divisors (see below), whose sum is σ = 77448606. Its totient is φ = 25816200.

The previous prime is 51632393. The next prime is 51632429. The reversal of 51632402 is 20423615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26822041 + 24810361 = 5179^2 + 4981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12908099 + ... + 12908102.

Almost surely, 2^51632402 is an apocalyptic number.

51632402 is a deficient number, since it is larger than the sum of its proper divisors (25816204).

51632402 is a wasteful number, since it uses less digits than its factorization.

51632402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25816203.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 51632402 is about 7185.5690101759. The cubic root of 51632402 is about 372.3695070143.

The spelling of 51632402 in words is "fifty-one million, six hundred thirty-two thousand, four hundred two".