53977404 has 48 divisors (see below), whose sum is σ = 142782080. Its totient is φ = 15733440.

The previous prime is 53977403. The next prime is 53977421. The reversal of 53977404 is 40477935.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53977403) 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, 6142 + ... + 12069.

Almost surely, 2^53977404 is an apocalyptic number.

It is an amenable number.

53977404 is an abundant number, since it is smaller than the sum of its proper divisors (88804676).

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

53977404 is a wasteful number, since it uses less digits than its factorization.

53977404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18250 (or 18248 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 53977404 is about 7346.9316044183. The cubic root of 53977404 is about 377.9235869168.

The spelling of 53977404 in words is "fifty-three million, nine hundred seventy-seven thousand, four hundred four".