52615331 has 4 divisors (see below), whose sum is σ = 53356464. Its totient is φ = 51874200.

The previous prime is 52615307. The next prime is 52615333. The reversal of 52615331 is 13351625.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52615331 - 2⁶ = 52615267 is a prime.

It is a super-2 number, since 2×52615331² = 5536746112479122, which contains 22 as substring.

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 52615331.

It is not an unprimeable number, because it can be changed into a prime (52615333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370460 + ... + 370601.

It is an arithmetic number, because the mean of its divisors is an integer number (13339116).

Almost surely, 2^52615331 is an apocalyptic number.

52615331 is a deficient number, since it is larger than the sum of its proper divisors (741133).

52615331 is an equidigital number, since it uses as much as digits as its factorization.

52615331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741132.

The product of its digits is 2700, while the sum is 26.

The square root of 52615331 is about 7253.6426021689. The cubic root of 52615331 is about 374.7176090306.

Adding to 52615331 its reverse (13351625), we get a palindrome (65966956).

The spelling of 52615331 in words is "fifty-two million, six hundred fifteen thousand, three hundred thirty-one".