52213161 has 32 divisors (see below), whose sum is σ = 93477888. Its totient is φ = 25035840.

The previous prime is 52213157. The next prime is 52213163. The reversal of 52213161 is 16131225.

It is not a de Polignac number, because 52213161 - 2² = 52213157 is a prime.

It is a super-2 number, since 2×52213161² = 5452428363223842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52213163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5691 + ... + 11696.

It is an arithmetic number, because the mean of its divisors is an integer number (2921184).

Almost surely, 2^52213161 is an apocalyptic number.

It is an amenable number.

52213161 is a deficient number, since it is larger than the sum of its proper divisors (41264727).

52213161 is a wasteful number, since it uses less digits than its factorization.

52213161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17421.

The product of its digits is 360, while the sum is 21.

The square root of 52213161 is about 7225.8674911736. The cubic root of 52213161 is about 373.7604369147.

Adding to 52213161 its reverse (16131225), we get a palindrome (68344386).

The spelling of 52213161 in words is "fifty-two million, two hundred thirteen thousand, one hundred sixty-one".