51273892 has 6 divisors (see below), whose sum is σ = 89729318. Its totient is φ = 25636944.

The previous prime is 51273889. The next prime is 51273899. The reversal of 51273892 is 29837215.

It can be written as a sum of positive squares in only one way, i.e., 36650916 + 14622976 = 6054^2 + 3824^2 .

It is not an unprimeable number, because it can be changed into a prime (51273899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6409233 + ... + 6409240.

Almost surely, 2^51273892 is an apocalyptic number.

It is an amenable number.

51273892 is a deficient number, since it is larger than the sum of its proper divisors (38455426).

51273892 is a wasteful number, since it uses less digits than its factorization.

51273892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12818477 (or 12818475 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 51273892 is about 7160.5790268665. The cubic root of 51273892 is about 371.5056543033.

The spelling of 51273892 in words is "fifty-one million, two hundred seventy-three thousand, eight hundred ninety-two".