45501555 has 16 divisors (see below), whose sum is σ = 79421184. Its totient is φ = 22061280.

The previous prime is 45501553. The next prime is 45501559. The reversal of 45501555 is 55510554.

It is not a de Polignac number, because 45501555 - 2¹ = 45501553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45501553) 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, 137719 + ... + 138048.

It is an arithmetic number, because the mean of its divisors is an integer number (4963824).

Almost surely, 2^45501555 is an apocalyptic number.

45501555 is a deficient number, since it is larger than the sum of its proper divisors (33919629).

45501555 is a wasteful number, since it uses less digits than its factorization.

45501555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275786.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 45501555 is about 6745.4840449000. The cubic root of 45501555 is about 357.0059159939.

It can be divided in two parts, 45501 and 555, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 45501555 in words is "forty-five million, five hundred one thousand, five hundred fifty-five".