52581761 has 2 divisors, whose sum is σ = 52581762. Its totient is φ = 52581760.

The previous prime is 52581757. The next prime is 52581769. The reversal of 52581761 is 16718525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44142736 + 8439025 = 6644^2 + 2905^2 .

It is a cyclic number.

It is not a de Polignac number, because 52581761 - 2² = 52581757 is a prime.

It is a super-2 number, since 2×52581761² = 5529683179722242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52581769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26290880 + 26290881.

It is an arithmetic number, because the mean of its divisors is an integer number (26290881).

Almost surely, 2^52581761 is an apocalyptic number.

It is an amenable number.

52581761 is a deficient number, since it is larger than the sum of its proper divisors (1).

52581761 is an equidigital number, since it uses as much as digits as its factorization.

52581761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 35.

The square root of 52581761 is about 7251.3282231602. The cubic root of 52581761 is about 374.6378987627.

The spelling of 52581761 in words is "fifty-two million, five hundred eighty-one thousand, seven hundred sixty-one".