45387457 has 2 divisors, whose sum is σ = 45387458. Its totient is φ = 45387456.

The previous prime is 45387443. The next prime is 45387469. The reversal of 45387457 is 75478354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36954241 + 8433216 = 6079^2 + 2904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45387457 is a prime.

It is not a weakly prime, because it can be changed into another prime (45387437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22693728 + 22693729.

It is an arithmetic number, because the mean of its divisors is an integer number (22693729).

Almost surely, 2^45387457 is an apocalyptic number.

It is an amenable number.

45387457 is a deficient number, since it is larger than the sum of its proper divisors (1).

45387457 is an equidigital number, since it uses as much as digits as its factorization.

45387457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 43.

The square root of 45387457 is about 6737.0213744651. The cubic root of 45387457 is about 356.7072613222.

The spelling of 45387457 in words is "forty-five million, three hundred eighty-seven thousand, four hundred fifty-seven".