52132815 has 120 divisors (see below), whose sum is σ = 113221152. Its totient is φ = 22861440.

The previous prime is 52132783. The next prime is 52132819. The reversal of 52132815 is 51823125.

It is a happy number.

It is not a de Polignac number, because 52132815 - 2⁵ = 52132783 is a prime.

It is a super-3 number, since 3×52132815³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52132819) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 734230 + ... + 734300.

Almost surely, 2^52132815 is an apocalyptic number.

52132815 is an abundant number, since it is smaller than the sum of its proper divisors (61088337).

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

52132815 is a wasteful number, since it uses less digits than its factorization.

52132815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 123 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 52132815 is about 7220.3057414489. The cubic root of 52132815 is about 373.5686233808.

The spelling of 52132815 in words is "fifty-two million, one hundred thirty-two thousand, eight hundred fifteen".