45215857 has 2 divisors, whose sum is σ = 45215858. Its totient is φ = 45215856.

The previous prime is 45215851. The next prime is 45215879. The reversal of 45215857 is 75851254.

45215857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25847056 + 19368801 = 5084^2 + 4401^2 .

It is a cyclic number.

It is not a de Polignac number, because 45215857 - 2¹¹ = 45213809 is a prime.

It is not a weakly prime, because it can be changed into another prime (45215851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22607928 + 22607929.

It is an arithmetic number, because the mean of its divisors is an integer number (22607929).

Almost surely, 2^45215857 is an apocalyptic number.

It is an amenable number.

45215857 is a deficient number, since it is larger than the sum of its proper divisors (1).

45215857 is an equidigital number, since it uses as much as digits as its factorization.

45215857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56000, while the sum is 37.

The square root of 45215857 is about 6724.2737154283. The cubic root of 45215857 is about 356.2571496667.

The spelling of 45215857 in words is "forty-five million, two hundred fifteen thousand, eight hundred fifty-seven".