52215263 has 4 divisors (see below), whose sum is σ = 53488848. Its totient is φ = 50941680.

The previous prime is 52215239. The next prime is 52215269. The reversal of 52215263 is 36251225.

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

It is not a de Polignac number, because 52215263 - 2⁶ = 52215199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52215269) 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, 636731 + ... + 636812.

It is an arithmetic number, because the mean of its divisors is an integer number (13372212).

Almost surely, 2^52215263 is an apocalyptic number.

52215263 is a deficient number, since it is larger than the sum of its proper divisors (1273585).

52215263 is a wasteful number, since it uses less digits than its factorization.

52215263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273584.

The product of its digits is 3600, while the sum is 26.

The square root of 52215263 is about 7226.0129393740. The cubic root of 52215263 is about 373.7654524694.

Adding to 52215263 its reverse (36251225), we get a palindrome (88466488).

The spelling of 52215263 in words is "fifty-two million, two hundred fifteen thousand, two hundred sixty-three".