45155515 has 4 divisors (see below), whose sum is σ = 54186624. Its totient is φ = 36124408.

The previous prime is 45155507. The next prime is 45155563. The reversal of 45155515 is 51555154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45155515 - 2³ = 45155507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4515547 + ... + 4515556.

It is an arithmetic number, because the mean of its divisors is an integer number (13546656).

Almost surely, 2^45155515 is an apocalyptic number.

45155515 is a deficient number, since it is larger than the sum of its proper divisors (9031109).

45155515 is an equidigital number, since it uses as much as digits as its factorization.

45155515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031108.

The product of its digits is 12500, while the sum is 31.

The square root of 45155515 is about 6719.7853388334. The cubic root of 45155515 is about 356.0986002818.

The spelling of 45155515 in words is "forty-five million, one hundred fifty-five thousand, five hundred fifteen".