53557384 has 8 divisors (see below), whose sum is σ = 100420110. Its totient is φ = 26778688.

The previous prime is 53557381. The next prime is 53557391. The reversal of 53557384 is 48375535.

It can be written as a sum of positive squares in only one way, i.e., 47196900 + 6360484 = 6870^2 + 2522^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (53557381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347329 + ... + 3347344.

Almost surely, 2^53557384 is an apocalyptic number.

It is an amenable number.

53557384 is a deficient number, since it is larger than the sum of its proper divisors (46862726).

53557384 is a wasteful number, since it uses less digits than its factorization.

53557384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6694679 (or 6694675 counting only the distinct ones).

The product of its digits is 252000, while the sum is 40.

The square root of 53557384 is about 7318.2910573439. The cubic root of 53557384 is about 376.9407745383.

The spelling of 53557384 in words is "fifty-three million, five hundred fifty-seven thousand, three hundred eighty-four".