874194521 has 2 divisors, whose sum is σ = 874194522. Its totient is φ = 874194520.

The previous prime is 874194509. The next prime is 874194533. The reversal of 874194521 is 125491478.

It is a balanced prime because it is at equal distance from previous prime (874194509) and next prime (874194533).

It can be written as a sum of positive squares in only one way, i.e., 530611225 + 343583296 = 23035^2 + 18536^2 .

It is a cyclic number.

It is not a de Polignac number, because 874194521 - 2⁶ = 874194457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (874194551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437097260 + 437097261.

It is an arithmetic number, because the mean of its divisors is an integer number (437097261).

Almost surely, 2^874194521 is an apocalyptic number.

It is an amenable number.

874194521 is a deficient number, since it is larger than the sum of its proper divisors (1).

874194521 is an equidigital number, since it uses as much as digits as its factorization.

874194521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 874194521 is about 29566.7807006444. The cubic root of 874194521 is about 956.1720106359.

The spelling of 874194521 in words is "eight hundred seventy-four million, one hundred ninety-four thousand, five hundred twenty-one".