45878891 has 2 divisors, whose sum is σ = 45878892. Its totient is φ = 45878890.

The previous prime is 45878887. The next prime is 45878897. The reversal of 45878891 is 19887854.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45878891 - 2² = 45878887 is a prime.

It is not a weakly prime, because it can be changed into another prime (45878897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22939445 + 22939446.

It is an arithmetic number, because the mean of its divisors is an integer number (22939446).

Almost surely, 2^45878891 is an apocalyptic number.

45878891 is a deficient number, since it is larger than the sum of its proper divisors (1).

45878891 is an equidigital number, since it uses as much as digits as its factorization.

45878891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 50.

The square root of 45878891 is about 6773.3958248430. The cubic root of 45878891 is about 357.9900619361.

The spelling of 45878891 in words is "forty-five million, eight hundred seventy-eight thousand, eight hundred ninety-one".