51696775 has 24 divisors (see below), whose sum is σ = 70012880. Its totient is φ = 37635840.

The previous prime is 51696769. The next prime is 51696797. The reversal of 51696775 is 57769615.

It is a happy number.

It is not a de Polignac number, because 51696775 - 2³ = 51696767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22636 + ... + 24814.

Almost surely, 2^51696775 is an apocalyptic number.

51696775 is a deficient number, since it is larger than the sum of its proper divisors (18316105).

51696775 is a wasteful number, since it uses less digits than its factorization.

51696775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275 (or 2270 counting only the distinct ones).

The product of its digits is 396900, while the sum is 46.

The square root of 51696775 is about 7190.0469400415. The cubic root of 51696775 is about 372.5241940354.

The spelling of 51696775 in words is "fifty-one million, six hundred ninety-six thousand, seven hundred seventy-five".