74452457 has 2 divisors, whose sum is σ = 74452458. Its totient is φ = 74452456.

The previous prime is 74452451. The next prime is 74452459. The reversal of 74452457 is 75425447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 15531481 = 7676^2 + 3941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74452457 is a prime.

Together with 74452459, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74452457.

It is not a weakly prime, because it can be changed into another prime (74452451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37226228 + 37226229.

It is an arithmetic number, because the mean of its divisors is an integer number (37226229).

Almost surely, 2^74452457 is an apocalyptic number.

It is an amenable number.

74452457 is a deficient number, since it is larger than the sum of its proper divisors (1).

74452457 is an equidigital number, since it uses as much as digits as its factorization.

74452457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 38.

The square root of 74452457 is about 8628.5837192438. The cubic root of 74452457 is about 420.6875680464.

The spelling of 74452457 in words is "seventy-four million, four hundred fifty-two thousand, four hundred fifty-seven".