51624897 has 16 divisors (see below), whose sum is σ = 70910400. Its totient is φ = 33388992.

The previous prime is 51624893. The next prime is 51624899. The reversal of 51624897 is 79842615.

It is not a de Polignac number, because 51624897 - 2² = 51624893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51624893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18979 + ... + 21527.

It is an arithmetic number, because the mean of its divisors is an integer number (4431900).

Almost surely, 2^51624897 is an apocalyptic number.

It is an amenable number.

51624897 is a deficient number, since it is larger than the sum of its proper divisors (19285503).

51624897 is a wasteful number, since it uses less digits than its factorization.

51624897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752.

The product of its digits is 120960, while the sum is 42.

The square root of 51624897 is about 7185.0467639397. The cubic root of 51624897 is about 372.3514642837.

The spelling of 51624897 in words is "fifty-one million, six hundred twenty-four thousand, eight hundred ninety-seven".