74205457 has 2 divisors, whose sum is σ = 74205458. Its totient is φ = 74205456.

The previous prime is 74205419. The next prime is 74205479. The reversal of 74205457 is 75450247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69205761 + 4999696 = 8319^2 + 2236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74205457 is a prime.

It is not a weakly prime, because it can be changed into another prime (74205497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37102728 + 37102729.

It is an arithmetic number, because the mean of its divisors is an integer number (37102729).

Almost surely, 2^74205457 is an apocalyptic number.

It is an amenable number.

74205457 is a deficient number, since it is larger than the sum of its proper divisors (1).

74205457 is an equidigital number, since it uses as much as digits as its factorization.

74205457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 74205457 is about 8614.2589350448. The cubic root of 74205457 is about 420.2218348141.

The spelling of 74205457 in words is "seventy-four million, two hundred five thousand, four hundred fifty-seven".