52131555 has 48 divisors (see below), whose sum is σ = 103993344. Its totient is φ = 23664960.

The previous prime is 52131551. The next prime is 52131587. The reversal of 52131555 is 55513125.

It is not a de Polignac number, because 52131555 - 2² = 52131551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52131551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52110 + ... + 53100.

It is an arithmetic number, because the mean of its divisors is an integer number (2166528).

Almost surely, 2^52131555 is an apocalyptic number.

52131555 is a deficient number, since it is larger than the sum of its proper divisors (51861789).

52131555 is a wasteful number, since it uses less digits than its factorization.

52131555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176 (or 1173 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 52131555 is about 7220.2184869989. The cubic root of 52131555 is about 373.5656137584.

The spelling of 52131555 in words is "fifty-two million, one hundred thirty-one thousand, five hundred fifty-five".