45215155 has 16 divisors (see below), whose sum is σ = 60475680. Its totient is φ = 32251392.

The previous prime is 45215119. The next prime is 45215161. The reversal of 45215155 is 55151254.

It is a cyclic number.

It is not a de Polignac number, because 45215155 - 2²¹ = 43118003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12384 + ... + 15613.

It is an arithmetic number, because the mean of its divisors is an integer number (3779730).

Almost surely, 2^45215155 is an apocalyptic number.

45215155 is a deficient number, since it is larger than the sum of its proper divisors (15260525).

45215155 is a wasteful number, since it uses less digits than its factorization.

45215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28038.

The product of its digits is 5000, while the sum is 28.

The square root of 45215155 is about 6724.2215162798. The cubic root of 45215155 is about 356.2553059639.

The spelling of 45215155 in words is "forty-five million, two hundred fifteen thousand, one hundred fifty-five".