52405081 has 2 divisors, whose sum is σ = 52405082. Its totient is φ = 52405080.

The previous prime is 52405079. The next prime is 52405099. The reversal of 52405081 is 18050425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41409225 + 10995856 = 6435^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 52405081 - 2¹ = 52405079 is a prime.

It is a super-2 number, since 2×52405081² = 5492585029233122, which contains 22 as substring.

Together with 52405079, it forms a pair of twin primes.

It is equal to p_3136615 and since 52405081 and 3136615 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 (52405481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26202540 + 26202541.

It is an arithmetic number, because the mean of its divisors is an integer number (26202541).

Almost surely, 2^52405081 is an apocalyptic number.

It is an amenable number.

52405081 is a deficient number, since it is larger than the sum of its proper divisors (1).

52405081 is an equidigital number, since it uses as much as digits as its factorization.

52405081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 52405081 is about 7239.1353765488. The cubic root of 52405081 is about 374.2178209159.

The spelling of 52405081 in words is "fifty-two million, four hundred five thousand, eighty-one".