53507280 has 40 divisors (see below), whose sum is σ = 165873312. Its totient is φ = 14268544.

The previous prime is 53507257. The next prime is 53507281. The reversal of 53507280 is 8270535.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53507281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111234 + ... + 111713.

Almost surely, 2^53507280 is an apocalyptic number.

It is an amenable number.

53507280 is an abundant number, since it is smaller than the sum of its proper divisors (112366032).

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

53507280 is a wasteful number, since it uses less digits than its factorization.

53507280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222963 (or 222957 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 53507280 is about 7314.8670527905. The cubic root of 53507280 is about 376.8231926619.

The spelling of 53507280 in words is "fifty-three million, five hundred seven thousand, two hundred eighty".