52018891 has 4 divisors (see below), whose sum is σ = 52035784. Its totient is φ = 52002000.

The previous prime is 52018877. The next prime is 52018919. The reversal of 52018891 is 19881025.

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 52018891 - 2⁵ = 52018859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52018831) 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, 2370 + ... + 10471.

It is an arithmetic number, because the mean of its divisors is an integer number (13008946).

Almost surely, 2^52018891 is an apocalyptic number.

52018891 is a deficient number, since it is larger than the sum of its proper divisors (16893).

52018891 is a wasteful number, since it uses less digits than its factorization.

52018891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16892.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 52018891 is about 7212.4122871616. The cubic root of 52018891 is about 373.2963094839.

The spelling of 52018891 in words is "fifty-two million, eighteen thousand, eight hundred ninety-one".