45815857 has 2 divisors, whose sum is σ = 45815858. Its totient is φ = 45815856.

The previous prime is 45815843. The next prime is 45815881. The reversal of 45815857 is 75851854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31798321 + 14017536 = 5639^2 + 3744^2 .

It is a cyclic number.

It is not a de Polignac number, because 45815857 - 2⁷ = 45815729 is a prime.

It is not a weakly prime, because it can be changed into another prime (45815827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22907928 + 22907929.

It is an arithmetic number, because the mean of its divisors is an integer number (22907929).

Almost surely, 2^45815857 is an apocalyptic number.

It is an amenable number.

45815857 is a deficient number, since it is larger than the sum of its proper divisors (1).

45815857 is an equidigital number, since it uses as much as digits as its factorization.

45815857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224000, while the sum is 43.

The square root of 45815857 is about 6768.7411680459. The cubic root of 45815857 is about 357.8260366992.

The spelling of 45815857 in words is "forty-five million, eight hundred fifteen thousand, eight hundred fifty-seven".