52087081 has 2 divisors, whose sum is σ = 52087082. Its totient is φ = 52087080.

The previous prime is 52087069. The next prime is 52087109. The reversal of 52087081 is 18078025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41718681 + 10368400 = 6459^2 + 3220^2 .

It is a cyclic number.

It is not a de Polignac number, because 52087081 - 2⁷ = 52086953 is a prime.

It is a super-2 number, since 2×52087081² = 5426128014201122, which contains 22 as substring.

It is equal to p_3118756 and since 52087081 and 3118756 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (52087681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26043540 + 26043541.

It is an arithmetic number, because the mean of its divisors is an integer number (26043541).

Almost surely, 2^52087081 is an apocalyptic number.

It is an amenable number.

52087081 is a deficient number, since it is larger than the sum of its proper divisors (1).

52087081 is an equidigital number, since it uses as much as digits as its factorization.

52087081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 52087081 is about 7217.1380061628. The cubic root of 52087081 is about 373.4593525642.

The spelling of 52087081 in words is "fifty-two million, eighty-seven thousand, eighty-one".