53904780 has 36 divisors (see below), whose sum is σ = 163511712. Its totient is φ = 14374560.

The previous prime is 53904779. The next prime is 53904787. The reversal of 53904780 is 8740935.

53904780 is a `hidden beast` number, since 539 + 0 + 47 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (53904787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149556 + ... + 149915.

It is an arithmetic number, because the mean of its divisors is an integer number (4541992).

Almost surely, 2^53904780 is an apocalyptic number.

It is an amenable number.

53904780 is an abundant number, since it is smaller than the sum of its proper divisors (109606932).

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

53904780 is a wasteful number, since it uses less digits than its factorization.

53904780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299486 (or 299481 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 53904780 is about 7341.9874693437. The cubic root of 53904780 is about 377.7540181776.

The spelling of 53904780 in words is "fifty-three million, nine hundred four thousand, seven hundred eighty".