51253893 has 12 divisors (see below), whose sum is σ = 75755680. Its totient is φ = 33374376.

The previous prime is 51253889. The next prime is 51253897. The reversal of 51253893 is 39835215.

51253893 is a `hidden beast` number, since 512 + 53 + 8 + 93 = 666.

It is an interprime number because it is at equal distance from previous prime (51253889) and next prime (51253897).

It is not a de Polignac number, because 51253893 - 2² = 51253889 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51253897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65833 + ... + 66606.

Almost surely, 2^51253893 is an apocalyptic number.

It is an amenable number.

51253893 is a deficient number, since it is larger than the sum of its proper divisors (24501787).

51253893 is a wasteful number, since it uses less digits than its factorization.

51253893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132488 (or 132485 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 51253893 is about 7159.1824253891. The cubic root of 51253893 is about 371.4573470169.

The spelling of 51253893 in words is "fifty-one million, two hundred fifty-three thousand, eight hundred ninety-three".