45181290 has 64 divisors (see below), whose sum is σ = 135198720. Its totient is φ = 9387840.

The previous prime is 45181273. The next prime is 45181307. The reversal of 45181290 is 9218154.

It is a happy number.

45181290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (45181273) and next prime (45181307).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7470 + ... + 12089.

It is an arithmetic number, because the mean of its divisors is an integer number (2112480).

Almost surely, 2^45181290 is an apocalyptic number.

45181290 is an abundant number, since it is smaller than the sum of its proper divisors (90017430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45181290 is a wasteful number, since it uses less digits than its factorization.

45181290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19587.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 45181290 is about 6721.7029092336. The cubic root of 45181290 is about 356.1663416980.

The spelling of 45181290 in words is "forty-five million, one hundred eighty-one thousand, two hundred ninety".