45187755 has 32 divisors (see below), whose sum is σ = 75907584. Its totient is φ = 22910976.

The previous prime is 45187733. The next prime is 45187759. The reversal of 45187755 is 55778154.

It is not a de Polignac number, because 45187755 - 2⁶ = 45187691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45187759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78027 + ... + 78603.

It is an arithmetic number, because the mean of its divisors is an integer number (2372112).

Almost surely, 2^45187755 is an apocalyptic number.

45187755 is a deficient number, since it is larger than the sum of its proper divisors (30719829).

45187755 is a wasteful number, since it uses less digits than its factorization.

45187755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its digits is 196000, while the sum is 42.

The square root of 45187755 is about 6722.1837969517. The cubic root of 45187755 is about 356.1833288593.

The spelling of 45187755 in words is "forty-five million, one hundred eighty-seven thousand, seven hundred fifty-five".