52157887 has 4 divisors (see below), whose sum is σ = 55226016. Its totient is φ = 49089760.

The previous prime is 52157851. The next prime is 52157891. The reversal of 52157887 is 78875125.

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

It is a cyclic number.

It is not a de Polignac number, because 52157887 - 2¹¹ = 52155839 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 (52157837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1534039 + ... + 1534072.

It is an arithmetic number, because the mean of its divisors is an integer number (13806504).

Almost surely, 2^52157887 is an apocalyptic number.

52157887 is a deficient number, since it is larger than the sum of its proper divisors (3068129).

52157887 is a wasteful number, since it uses less digits than its factorization.

52157887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068128.

The product of its digits is 156800, while the sum is 43.

The square root of 52157887 is about 7222.0417473177. The cubic root of 52157887 is about 373.6285000084.

The spelling of 52157887 in words is "fifty-two million, one hundred fifty-seven thousand, eight hundred eighty-seven".