52221881 has 2 divisors, whose sum is σ = 52221882. Its totient is φ = 52221880.

The previous prime is 52221839. The next prime is 52221893. The reversal of 52221881 is 18812225.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34916281 + 17305600 = 5909^2 + 4160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52221881 is a prime.

It is a super-2 number, since 2×52221881² = 5454249710356322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52221581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110940 + 26110941.

It is an arithmetic number, because the mean of its divisors is an integer number (26110941).

Almost surely, 2^52221881 is an apocalyptic number.

It is an amenable number.

52221881 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221881 is an equidigital number, since it uses as much as digits as its factorization.

52221881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 29.

The square root of 52221881 is about 7226.4708537432. The cubic root of 52221881 is about 373.7812427136.

The spelling of 52221881 in words is "fifty-two million, two hundred twenty-one thousand, eight hundred eighty-one".