53523513 has 12 divisors (see below), whose sum is σ = 81381040. Its totient is φ = 33804216.

The previous prime is 53523511. The next prime is 53523523. The reversal of 53523513 is 31532535.

It is not a de Polignac number, because 53523513 - 2¹ = 53523511 is a prime.

It is a super-2 number, since 2×53523513² = 5729532887722338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53523511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156331 + ... + 156672.

Almost surely, 2^53523513 is an apocalyptic number.

It is an amenable number.

53523513 is a deficient number, since it is larger than the sum of its proper divisors (27857527).

53523513 is a wasteful number, since it uses less digits than its factorization.

53523513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313028 (or 313025 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 53523513 is about 7315.9765581910. The cubic root of 53523513 is about 376.8612955917.

The spelling of 53523513 in words is "fifty-three million, five hundred twenty-three thousand, five hundred thirteen".