45420457 has 2 divisors, whose sum is σ = 45420458. Its totient is φ = 45420456.

The previous prime is 45420443. The next prime is 45420491. The reversal of 45420457 is 75402454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41718681 + 3701776 = 6459^2 + 1924^2 .

It is a cyclic number.

It is not a de Polignac number, because 45420457 - 2²³ = 37031849 is a prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22710228 + 22710229.

It is an arithmetic number, because the mean of its divisors is an integer number (22710229).

Almost surely, 2^45420457 is an apocalyptic number.

It is an amenable number.

45420457 is a deficient number, since it is larger than the sum of its proper divisors (1).

45420457 is an equidigital number, since it uses as much as digits as its factorization.

45420457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 45420457 is about 6739.4700830258. The cubic root of 45420457 is about 356.7936911325.

The spelling of 45420457 in words is "forty-five million, four hundred twenty thousand, four hundred fifty-seven".