51695902 has 4 divisors (see below), whose sum is σ = 77543856. Its totient is φ = 25847950.

The previous prime is 51695887. The next prime is 51695971. The reversal of 51695902 is 20959615.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12923974 + ... + 12923977.

It is an arithmetic number, because the mean of its divisors is an integer number (19385964).

Almost surely, 2^51695902 is an apocalyptic number.

51695902 is a deficient number, since it is larger than the sum of its proper divisors (25847954).

51695902 is a wasteful number, since it uses less digits than its factorization.

51695902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25847953.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 51695902 is about 7189.9862308630. The cubic root of 51695902 is about 372.5220970931.

The spelling of 51695902 in words is "fifty-one million, six hundred ninety-five thousand, nine hundred two".