464885581 has 2 divisors, whose sum is σ = 464885582. Its totient is φ = 464885580.

The previous prime is 464885567. The next prime is 464885609. The reversal of 464885581 is 185588464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398202025 + 66683556 = 19955^2 + 8166^2 .

It is a cyclic number.

It is not a de Polignac number, because 464885581 - 2⁵ = 464885549 is a prime.

It is a super-2 number, since 2×464885581² = 432237206843415122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464885381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232442790 + 232442791.

It is an arithmetic number, because the mean of its divisors is an integer number (232442791).

Almost surely, 2^464885581 is an apocalyptic number.

It is an amenable number.

464885581 is a deficient number, since it is larger than the sum of its proper divisors (1).

464885581 is an equidigital number, since it uses as much as digits as its factorization.

464885581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1228800, while the sum is 49.

The square root of 464885581 is about 21561.2054625895. The cubic root of 464885581 is about 774.6675402321.

The spelling of 464885581 in words is "four hundred sixty-four million, eight hundred eighty-five thousand, five hundred eighty-one".