745393057 has 2 divisors, whose sum is σ = 745393058. Its totient is φ = 745393056.

The previous prime is 745393027. The next prime is 745393063. The reversal of 745393057 is 750393547.

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., 718186401 + 27206656 = 26799^2 + 5216^2 .

It is a cyclic number.

It is not a de Polignac number, because 745393057 - 2⁷ = 745392929 is a prime.

It is a super-2 number, since 2×745393057² = 1111221618847610498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (745393027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372696528 + 372696529.

It is an arithmetic number, because the mean of its divisors is an integer number (372696529).

Almost surely, 2^745393057 is an apocalyptic number.

It is an amenable number.

745393057 is a deficient number, since it is larger than the sum of its proper divisors (1).

745393057 is an equidigital number, since it uses as much as digits as its factorization.

745393057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 43.

The square root of 745393057 is about 27301.8874255975. The cubic root of 745393057 is about 906.6961696684.

The spelling of 745393057 in words is "seven hundred forty-five million, three hundred ninety-three thousand, fifty-seven".