52418991 has 8 divisors (see below), whose sum is σ = 70935424. Its totient is φ = 34424280.

The previous prime is 52418983. The next prime is 52419011. The reversal of 52418991 is 19981425.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52418991 - 2³ = 52418983 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 (52418911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130195 + ... + 130596.

It is an arithmetic number, because the mean of its divisors is an integer number (8866928).

Almost surely, 2^52418991 is an apocalyptic number.

52418991 is a deficient number, since it is larger than the sum of its proper divisors (18516433).

52418991 is a wasteful number, since it uses less digits than its factorization.

52418991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260861.

The product of its digits is 25920, while the sum is 39.

The square root of 52418991 is about 7240.0960628986. The cubic root of 52418991 is about 374.2509278164.

The spelling of 52418991 in words is "fifty-two million, four hundred eighteen thousand, nine hundred ninety-one".