53521516 has 24 divisors (see below), whose sum is σ = 95378976. Its totient is φ = 26275200.

The previous prime is 53521511. The next prime is 53521547. The reversal of 53521516 is 61512535.

It is not an unprimeable number, because it can be changed into a prime (53521511) 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, 54865 + ... + 55831.

It is an arithmetic number, because the mean of its divisors is an integer number (3974124).

Almost surely, 2^53521516 is an apocalyptic number.

It is an amenable number.

53521516 is a deficient number, since it is larger than the sum of its proper divisors (41857460).

53521516 is a wasteful number, since it uses less digits than its factorization.

53521516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1207 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 53521516 is about 7315.8400747966. The cubic root of 53521516 is about 376.8566085465.

The spelling of 53521516 in words is "fifty-three million, five hundred twenty-one thousand, five hundred sixteen".