374221561 has 16 divisors (see below), whose sum is σ = 463377024. Its totient is φ = 294868224.

The previous prime is 374221559. The next prime is 374221571. The reversal of 374221561 is 165122473.

It is not a de Polignac number, because 374221561 - 2¹ = 374221559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (374221541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31450 + ... + 41683.

It is an arithmetic number, because the mean of its divisors is an integer number (28961064).

Almost surely, 2^374221561 is an apocalyptic number.

It is an amenable number.

374221561 is a deficient number, since it is larger than the sum of its proper divisors (89155463).

374221561 is a wasteful number, since it uses less digits than its factorization.

374221561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73200.

The product of its digits is 10080, while the sum is 31.

The square root of 374221561 is about 19344.8070809714. The cubic root of 374221561 is about 720.6254602381.

It can be divided in two parts, 37422 and 1561, that added together give a palindrome (38983).

The spelling of 374221561 in words is "three hundred seventy-four million, two hundred twenty-one thousand, five hundred sixty-one".