53499375 has 30 divisors (see below), whose sum is σ = 96575336. Its totient is φ = 28530000.

The previous prime is 53499361. The next prime is 53499377. The reversal of 53499375 is 57399435.

It is not a de Polignac number, because 53499375 - 2⁵ = 53499343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53499375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53499377) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 870 + ... + 10380.

Almost surely, 2^53499375 is an apocalyptic number.

53499375 is a deficient number, since it is larger than the sum of its proper divisors (43075961).

53499375 is an equidigital number, since it uses as much as digits as its factorization.

53499375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9537 (or 9519 counting only the distinct ones).

The product of its digits is 510300, while the sum is 45.

The square root of 53499375 is about 7314.3266949187. The cubic root of 53499375 is about 376.8046348504.

The spelling of 53499375 in words is "fifty-three million, four hundred ninety-nine thousand, three hundred seventy-five".