45012155 has 16 divisors (see below), whose sum is σ = 56160000. Its totient is φ = 34596480.

The previous prime is 45012151. The next prime is 45012179. The reversal of 45012155 is 55121054.

It is a happy number.

It is not a de Polignac number, because 45012155 - 2² = 45012151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45012155.

It is not an unprimeable number, because it can be changed into a prime (45012151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22121 + ... + 24069.

It is an arithmetic number, because the mean of its divisors is an integer number (3510000).

Almost surely, 2^45012155 is an apocalyptic number.

45012155 is a deficient number, since it is larger than the sum of its proper divisors (11147845).

45012155 is a wasteful number, since it uses less digits than its factorization.

45012155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 45012155 is about 6709.1098515377. The cubic root of 45012155 is about 355.7213527794.

The spelling of 45012155 in words is "forty-five million, twelve thousand, one hundred fifty-five".