52091137 has 4 divisors (see below), whose sum is σ = 59532736. Its totient is φ = 44649540.

The previous prime is 52091119. The next prime is 52091147. The reversal of 52091137 is 73119025.

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 a de Polignac number, because none of the positive numbers 2^k-52091137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52091147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3720789 + ... + 3720802.

It is an arithmetic number, because the mean of its divisors is an integer number (14883184).

Almost surely, 2^52091137 is an apocalyptic number.

It is an amenable number.

52091137 is a deficient number, since it is larger than the sum of its proper divisors (7441599).

52091137 is an equidigital number, since it uses as much as digits as its factorization.

52091137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7441598.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 52091137 is about 7217.4189985063. The cubic root of 52091137 is about 373.4690460224.

The spelling of 52091137 in words is "fifty-two million, ninety-one thousand, one hundred thirty-seven".