74105257 has 2 divisors, whose sum is σ = 74105258. Its totient is φ = 74105256.

The previous prime is 74105249. The next prime is 74105279. The reversal of 74105257 is 75250147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41203561 + 32901696 = 6419^2 + 5736^2 .

It is a cyclic number.

It is not a de Polignac number, because 74105257 - 2³ = 74105249 is a prime.

It is not a weakly prime, because it can be changed into another prime (74105957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37052628 + 37052629.

It is an arithmetic number, because the mean of its divisors is an integer number (37052629).

Almost surely, 2^74105257 is an apocalyptic number.

It is an amenable number.

74105257 is a deficient number, since it is larger than the sum of its proper divisors (1).

74105257 is an equidigital number, since it uses as much as digits as its factorization.

74105257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 74105257 is about 8608.4410319175. The cubic root of 74105257 is about 420.0326070679.

The spelling of 74105257 in words is "seventy-four million, one hundred five thousand, two hundred fifty-seven".