53521473 has 8 divisors (see below), whose sum is σ = 72265600. Its totient is φ = 35229168.

The previous prime is 53521453. The next prime is 53521477. The reversal of 53521473 is 37412535.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-53521473 is a prime.

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 53521473.

It is not an unprimeable number, because it can be changed into a prime (53521477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112678 + ... + 113151.

It is an arithmetic number, because the mean of its divisors is an integer number (9033200).

Almost surely, 2^53521473 is an apocalyptic number.

It is an amenable number.

53521473 is a deficient number, since it is larger than the sum of its proper divisors (18744127).

53521473 is a wasteful number, since it uses less digits than its factorization.

53521473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225911.

The product of its digits is 12600, while the sum is 30.

The square root of 53521473 is about 7315.8371359674. The cubic root of 53521473 is about 376.8565076224.

The spelling of 53521473 in words is "fifty-three million, five hundred twenty-one thousand, four hundred seventy-three".