52561191 has 4 divisors (see below), whose sum is σ = 70081592. Its totient is φ = 35040792.

The previous prime is 52561183. The next prime is 52561193. The reversal of 52561191 is 19116525.

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

It is not a de Polignac number, because 52561191 - 2³ = 52561183 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 (52561193) 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, 8760196 + ... + 8760201.

It is an arithmetic number, because the mean of its divisors is an integer number (17520398).

Almost surely, 2^52561191 is an apocalyptic number.

52561191 is a deficient number, since it is larger than the sum of its proper divisors (17520401).

52561191 is a wasteful number, since it uses less digits than its factorization.

52561191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17520400.

The product of its digits is 2700, while the sum is 30.

The square root of 52561191 is about 7249.9097235759. The cubic root of 52561191 is about 374.5890395730.

It can be divided in two parts, 525 and 61191, that added together give a palindrome (61716).

The spelling of 52561191 in words is "fifty-two million, five hundred sixty-one thousand, one hundred ninety-one".