374512561 has 2 divisors, whose sum is σ = 374512562. Its totient is φ = 374512560.

The previous prime is 374512531. The next prime is 374512597. The reversal of 374512561 is 165215473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371756961 + 2755600 = 19281^2 + 1660^2 .

It is an emirp because it is prime and its reverse (165215473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 374512561 - 2⁹ = 374512049 is a prime.

It is not a weakly prime, because it can be changed into another prime (374512511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187256280 + 187256281.

It is an arithmetic number, because the mean of its divisors is an integer number (187256281).

Almost surely, 2^374512561 is an apocalyptic number.

It is an amenable number.

374512561 is a deficient number, since it is larger than the sum of its proper divisors (1).

374512561 is an equidigital number, since it uses as much as digits as its factorization.

374512561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 374512561 is about 19352.3270177000. The cubic root of 374512561 is about 720.8122013726.

The spelling of 374512561 in words is "three hundred seventy-four million, five hundred twelve thousand, five hundred sixty-one".