53018907 has 4 divisors (see below), whose sum is σ = 70691880. Its totient is φ = 35345936.

The previous prime is 53018899. The next prime is 53018923. The reversal of 53018907 is 70981035.

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 53018907 - 2³ = 53018899 is a prime.

It is a super-2 number, since 2×53018907² = 5622008998949298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53018947) 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, 8836482 + ... + 8836487.

It is an arithmetic number, because the mean of its divisors is an integer number (17672970).

Almost surely, 2^53018907 is an apocalyptic number.

53018907 is a deficient number, since it is larger than the sum of its proper divisors (17672973).

53018907 is a wasteful number, since it uses less digits than its factorization.

53018907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17672972.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 53018907 is about 7281.4083115837. The cubic root of 53018907 is about 375.6732368380.

The spelling of 53018907 in words is "fifty-three million, eighteen thousand, nine hundred seven".