52491169 has 4 divisors (see below), whose sum is σ = 53000896. Its totient is φ = 51981444.

The previous prime is 52491157. The next prime is 52491191. The reversal of 52491169 is 96119425.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52491169 - 2¹¹ = 52489121 is a prime.

It is a super-2 number, since 2×52491169² = 5510645645973122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52491119) 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, 254709 + ... + 254914.

It is an arithmetic number, because the mean of its divisors is an integer number (13250224).

Almost surely, 2^52491169 is an apocalyptic number.

It is an amenable number.

52491169 is a deficient number, since it is larger than the sum of its proper divisors (509727).

52491169 is a wasteful number, since it uses less digits than its factorization.

52491169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509726.

The product of its digits is 19440, while the sum is 37.

The square root of 52491169 is about 7245.0789505705. The cubic root of 52491169 is about 374.4226231893.

The spelling of 52491169 in words is "fifty-two million, four hundred ninety-one thousand, one hundred sixty-nine".