52581091 has 2 divisors, whose sum is σ = 52581092. Its totient is φ = 52581090.

The previous prime is 52581083. The next prime is 52581103. The reversal of 52581091 is 19018525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52581091 - 2³ = 52581083 is a prime.

It is a super-2 number, since 2×52581091² = 5529542261500562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52581041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26290545 + 26290546.

It is an arithmetic number, because the mean of its divisors is an integer number (26290546).

Almost surely, 2^52581091 is an apocalyptic number.

52581091 is a deficient number, since it is larger than the sum of its proper divisors (1).

52581091 is an equidigital number, since it uses as much as digits as its factorization.

52581091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 52581091 is about 7251.2820245802. The cubic root of 52581091 is about 374.6363075363.

The spelling of 52581091 in words is "fifty-two million, five hundred eighty-one thousand, ninety-one".