52215155 has 8 divisors (see below), whose sum is σ = 62704032. Its totient is φ = 41741568.

The previous prime is 52215133. The next prime is 52215157. The reversal of 52215155 is 55151225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52215155 - 2⁶ = 52215091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52215157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5987 + ... + 11843.

It is an arithmetic number, because the mean of its divisors is an integer number (7838004).

Almost surely, 2^52215155 is an apocalyptic number.

52215155 is a deficient number, since it is larger than the sum of its proper divisors (10488877).

52215155 is a wasteful number, since it uses less digits than its factorization.

52215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645.

The product of its digits is 2500, while the sum is 26.

The square root of 52215155 is about 7226.0054663694. The cubic root of 52215155 is about 373.7651947753.

The spelling of 52215155 in words is "fifty-two million, two hundred fifteen thousand, one hundred fifty-five".