53508881 has 4 divisors (see below), whose sum is σ = 54009072. Its totient is φ = 53008692.

The previous prime is 53508869. The next prime is 53508887. The reversal of 53508881 is 18880535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53508881 is a prime.

It is a super-2 number, since 2×53508881² = 5726400691744322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53508887) 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, 249935 + ... + 250148.

It is an arithmetic number, because the mean of its divisors is an integer number (13502268).

Almost surely, 2^53508881 is an apocalyptic number.

It is an amenable number.

53508881 is a deficient number, since it is larger than the sum of its proper divisors (500191).

53508881 is a wasteful number, since it uses less digits than its factorization.

53508881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500190.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 53508881 is about 7314.9764866334. The cubic root of 53508881 is about 376.8269509537.

The spelling of 53508881 in words is "fifty-three million, five hundred eight thousand, eight hundred eighty-one".