52991155 has 8 divisors (see below), whose sum is σ = 72673632. Its totient is φ = 36336768.

The previous prime is 52991153. The next prime is 52991167. The reversal of 52991155 is 55119925.

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 52991155 - 2¹ = 52991153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52991153) 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, 756982 + ... + 757051.

It is an arithmetic number, because the mean of its divisors is an integer number (9084204).

Almost surely, 2^52991155 is an apocalyptic number.

52991155 is a deficient number, since it is larger than the sum of its proper divisors (19682477).

52991155 is a wasteful number, since it uses less digits than its factorization.

52991155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514045.

The product of its digits is 20250, while the sum is 37.

The square root of 52991155 is about 7279.5023868394. The cubic root of 52991155 is about 375.6076784436.

The spelling of 52991155 in words is "fifty-two million, nine hundred ninety-one thousand, one hundred fifty-five".