52881481 has 2 divisors, whose sum is σ = 52881482. Its totient is φ = 52881480.

The previous prime is 52881391. The next prime is 52881487. The reversal of 52881481 is 18418825.

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., 35940025 + 16941456 = 5995^2 + 4116^2 .

It is a cyclic number.

It is not a de Polignac number, because 52881481 - 2¹⁷ = 52750409 is a prime.

It is a super-2 number, since 2×52881481² = 5592902065506722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52881481.

It is not a weakly prime, because it can be changed into another prime (52881487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26440740 + 26440741.

It is an arithmetic number, because the mean of its divisors is an integer number (26440741).

Almost surely, 2^52881481 is an apocalyptic number.

It is an amenable number.

52881481 is a deficient number, since it is larger than the sum of its proper divisors (1).

52881481 is an equidigital number, since it uses as much as digits as its factorization.

52881481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20480, while the sum is 37.

The square root of 52881481 is about 7271.9654152093. The cubic root of 52881481 is about 375.3483719687.

The spelling of 52881481 in words is "fifty-two million, eight hundred eighty-one thousand, four hundred eighty-one".