74161457 has 2 divisors, whose sum is σ = 74161458. Its totient is φ = 74161456.

The previous prime is 74161433. The next prime is 74161459. The reversal of 74161457 is 75416147.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50112241 + 24049216 = 7079^2 + 4904^2 .

It is a cyclic number.

It is not a de Polignac number, because 74161457 - 2⁸ = 74161201 is a prime.

Together with 74161459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74161459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37080728 + 37080729.

It is an arithmetic number, because the mean of its divisors is an integer number (37080729).

Almost surely, 2^74161457 is an apocalyptic number.

It is an amenable number.

74161457 is a deficient number, since it is larger than the sum of its proper divisors (1).

74161457 is an equidigital number, since it uses as much as digits as its factorization.

74161457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 35.

The square root of 74161457 is about 8611.7046512290. The cubic root of 74161457 is about 420.1387617843.

The spelling of 74161457 in words is "seventy-four million, one hundred sixty-one thousand, four hundred fifty-seven".