45415881 has 12 divisors (see below), whose sum is σ = 74972352. Its totient is φ = 25951896.

The previous prime is 45415849. The next prime is 45415889. The reversal of 45415881 is 18851454.

It is not a de Polignac number, because 45415881 - 2⁵ = 45415849 is a prime.

It is a super-2 number, since 2×45415881² = 4125204494012322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45415889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360381 + ... + 360506.

It is an arithmetic number, because the mean of its divisors is an integer number (6247696).

Almost surely, 2^45415881 is an apocalyptic number.

It is an amenable number.

45415881 is a deficient number, since it is larger than the sum of its proper divisors (29556471).

45415881 is a wasteful number, since it uses less digits than its factorization.

45415881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720900 (or 720897 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 45415881 is about 6739.1305819074. The cubic root of 45415881 is about 356.7817086994.

The spelling of 45415881 in words is "forty-five million, four hundred fifteen thousand, eight hundred eighty-one".