464371561 has 2 divisors, whose sum is σ = 464371562. Its totient is φ = 464371560.

The previous prime is 464371553. The next prime is 464371601. The reversal of 464371561 is 165173464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241615936 + 222755625 = 15544^2 + 14925^2 .

It is a cyclic number.

It is not a de Polignac number, because 464371561 - 2³ = 464371553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 464371561.

It is not a weakly prime, because it can be changed into another prime (464371261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232185780 + 232185781.

It is an arithmetic number, because the mean of its divisors is an integer number (232185781).

Almost surely, 2^464371561 is an apocalyptic number.

It is an amenable number.

464371561 is a deficient number, since it is larger than the sum of its proper divisors (1).

464371561 is an equidigital number, since it uses as much as digits as its factorization.

464371561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 464371561 is about 21549.2821458164. The cubic root of 464371561 is about 774.3819205186.

The spelling of 464371561 in words is "four hundred sixty-four million, three hundred seventy-one thousand, five hundred sixty-one".