52791187 has 4 divisors (see below), whose sum is σ = 55086480. Its totient is φ = 50495896.

The previous prime is 52791181. The next prime is 52791203. The reversal of 52791187 is 78119725.

52791187 = 1504² + 1505² + ... + 1526².

52791187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52791187 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52791181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147612 + ... + 1147657.

It is an arithmetic number, because the mean of its divisors is an integer number (13771620).

Almost surely, 2^52791187 is an apocalyptic number.

52791187 is a deficient number, since it is larger than the sum of its proper divisors (2295293).

52791187 is a wasteful number, since it uses less digits than its factorization.

52791187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295292.

The product of its digits is 35280, while the sum is 40.

The square root of 52791187 is about 7265.7543999230. The cubic root of 52791187 is about 375.1346171510.

The spelling of 52791187 in words is "fifty-two million, seven hundred ninety-one thousand, one hundred eighty-seven".