51769388 has 24 divisors (see below), whose sum is σ = 101246544. Its totient is φ = 22956800.

The previous prime is 51769381. The next prime is 51769409. The reversal of 51769388 is 88396715.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51769381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12545 + ... + 16152.

It is an arithmetic number, because the mean of its divisors is an integer number (4218606).

Almost surely, 2^51769388 is an apocalyptic number.

It is an amenable number.

51769388 is a deficient number, since it is larger than the sum of its proper divisors (49477156).

51769388 is a wasteful number, since it uses less digits than its factorization.

51769388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28753 (or 28751 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 51769388 is about 7195.0947179311. The cubic root of 51769388 is about 372.6985275689.

The spelling of 51769388 in words is "fifty-one million, seven hundred sixty-nine thousand, three hundred eighty-eight".