52216081 has 4 divisors (see below), whose sum is σ = 52337664. Its totient is φ = 52094500.

The previous prime is 52216079. The next prime is 52216117. The reversal of 52216081 is 18061225.

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 not a de Polignac number, because 52216081 - 2¹ = 52216079 is a prime.

It is a super-2 number, since 2×52216081² = 5453038229997122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52216181) 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, 60145 + ... + 61006.

It is an arithmetic number, because the mean of its divisors is an integer number (13084416).

Almost surely, 2^52216081 is an apocalyptic number.

It is an amenable number.

52216081 is a deficient number, since it is larger than the sum of its proper divisors (121583).

52216081 is a wasteful number, since it uses less digits than its factorization.

52216081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121582.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 52216081 is about 7226.0695402134. The cubic root of 52216081 is about 373.7674042521.

The spelling of 52216081 in words is "fifty-two million, two hundred sixteen thousand, eighty-one".