53402280 has 32 divisors (see below), whose sum is σ = 160207200. Its totient is φ = 14240576.

The previous prime is 53402269. The next prime is 53402303. The reversal of 53402280 is 8220435.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53402280.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222390 + ... + 222629.

It is an arithmetic number, because the mean of its divisors is an integer number (5006475).

Almost surely, 2^53402280 is an apocalyptic number.

It is an amenable number.

53402280 is an abundant number, since it is smaller than the sum of its proper divisors (106804920).

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

53402280 is a wasteful number, since it uses less digits than its factorization.

53402280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445033 (or 445029 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 53402280 is about 7307.6863643701. The cubic root of 53402280 is about 376.5765449500.

The spelling of 53402280 in words is "fifty-three million, four hundred two thousand, two hundred eighty".