53985751 has 6 divisors (see below), whose sum is σ = 55161080. Its totient is φ = 52834956.

The previous prime is 53985739. The next prime is 53985779. The reversal of 53985751 is 15758935.

It is not a de Polignac number, because 53985751 - 2²⁵ = 20431319 is a prime.

It is a super-2 number, since 2×53985751² = 5828922622068002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53985698 and 53985707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53985551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10011 + ... + 14428.

Almost surely, 2^53985751 is an apocalyptic number.

53985751 is a deficient number, since it is larger than the sum of its proper divisors (1175329).

53985751 is an equidigital number, since it uses as much as digits as its factorization.

53985751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24533 (or 24486 counting only the distinct ones).

The product of its digits is 189000, while the sum is 43.

The square root of 53985751 is about 7347.4996427356. The cubic root of 53985751 is about 377.9430664605.

The spelling of 53985751 in words is "fifty-three million, nine hundred eighty-five thousand, seven hundred fifty-one".