45219457 has 2 divisors, whose sum is σ = 45219458. Its totient is φ = 45219456.

The previous prime is 45219451. The next prime is 45219467. The reversal of 45219457 is 75491254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 583696 = 6681^2 + 764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45219457 is a prime.

It is not a weakly prime, because it can be changed into another prime (45219451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22609728 + 22609729.

It is an arithmetic number, because the mean of its divisors is an integer number (22609729).

Almost surely, 2^45219457 is an apocalyptic number.

It is an amenable number.

45219457 is a deficient number, since it is larger than the sum of its proper divisors (1).

45219457 is an equidigital number, since it uses as much as digits as its factorization.

45219457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 45219457 is about 6724.5413970025. The cubic root of 45219457 is about 356.2666042533.

The spelling of 45219457 in words is "forty-five million, two hundred nineteen thousand, four hundred fifty-seven".