51253168 has 20 divisors (see below), whose sum is σ = 102507328. Its totient is φ = 24799680.

The previous prime is 51253133. The next prime is 51253183. The reversal of 51253168 is 86135215.

51253168 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51171 + ... + 52162.

Almost surely, 2^51253168 is an apocalyptic number.

It is an amenable number.

51253168 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51253168 is a wasteful number, since it uses less digits than its factorization.

51253168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103372 (or 103366 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 51253168 is about 7159.1317909367. The cubic root of 51253168 is about 371.4555955542.

The spelling of 51253168 in words is "fifty-one million, two hundred fifty-three thousand, one hundred sixty-eight".