52270991 has 8 divisors (see below), whose sum is σ = 54873600. Its totient is φ = 49725720.

The previous prime is 52270979. The next prime is 52270997. The reversal of 52270991 is 19907225.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52270991 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 (52270997) 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, 12461 + ... + 16118.

It is an arithmetic number, because the mean of its divisors is an integer number (6859200).

Almost surely, 2^52270991 is an apocalyptic number.

52270991 is a deficient number, since it is larger than the sum of its proper divisors (2602609).

52270991 is a wasteful number, since it uses less digits than its factorization.

52270991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28669.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 52270991 is about 7229.8679794309. The cubic root of 52270991 is about 373.8983752597.

The spelling of 52270991 in words is "fifty-two million, two hundred seventy thousand, nine hundred ninety-one".