52541581 has 2 divisors, whose sum is σ = 52541582. Its totient is φ = 52541580.

The previous prime is 52541569. The next prime is 52541627. The reversal of 52541581 is 18514525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 11964681 = 6370^2 + 3459^2 .

It is a cyclic number.

It is not a de Polignac number, because 52541581 - 2¹³ = 52533389 is a prime.

It is a super-2 number, since 2×52541581² = 5521235467959122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52541501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26270790 + 26270791.

It is an arithmetic number, because the mean of its divisors is an integer number (26270791).

Almost surely, 2^52541581 is an apocalyptic number.

It is an amenable number.

52541581 is a deficient number, since it is larger than the sum of its proper divisors (1).

52541581 is an equidigital number, since it uses as much as digits as its factorization.

52541581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8000, while the sum is 31.

The square root of 52541581 is about 7248.5571667746. The cubic root of 52541581 is about 374.5424487669.

The spelling of 52541581 in words is "fifty-two million, five hundred forty-one thousand, five hundred eighty-one".