53577864 has 24 divisors (see below), whose sum is σ = 145106910. Its totient is φ = 17859264.

The previous prime is 53577847. The next prime is 53577869. The reversal of 53577864 is 46877535.

It can be written as a sum of positive squares in only one way, i.e., 51236964 + 2340900 = 7158^2 + 1530^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (53577869) 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, 371997 + ... + 372140.

Almost surely, 2^53577864 is an apocalyptic number.

It is an amenable number.

53577864 is an abundant number, since it is smaller than the sum of its proper divisors (91529046).

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

53577864 is a wasteful number, since it uses less digits than its factorization.

53577864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744149 (or 744142 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 53577864 is about 7319.6901573769. The cubic root of 53577864 is about 376.9888149932.

The spelling of 53577864 in words is "fifty-three million, five hundred seventy-seven thousand, eight hundred sixty-four".