53400557 has 8 divisors (see below), whose sum is σ = 61440000. Its totient is φ = 45463824.

The previous prime is 53400547. The next prime is 53400563. The reversal of 53400557 is 75500435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53400557 - 2⁶ = 53400493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53400547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24557 + ... + 26642.

It is an arithmetic number, because the mean of its divisors is an integer number (7680000).

Almost surely, 2^53400557 is an apocalyptic number.

It is an amenable number.

53400557 is a deficient number, since it is larger than the sum of its proper divisors (8039443).

53400557 is a wasteful number, since it uses less digits than its factorization.

53400557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51355.

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 53400557 is about 7307.5684738496. The cubic root of 53400557 is about 376.5724948834.

The spelling of 53400557 in words is "fifty-three million, four hundred thousand, five hundred fifty-seven".