45544278 has 64 divisors (see below), whose sum is σ = 104509440. Its totient is φ = 13123968.

The previous prime is 45544193. The next prime is 45544307. The reversal of 45544278 is 87244554.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94843 + ... + 95321.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 2^45544278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45544278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52254720).

45544278 is an abundant number, since it is smaller than the sum of its proper divisors (58965162).

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

45544278 is a wasteful number, since it uses less digits than its factorization.

45544278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573.

The product of its digits is 179200, while the sum is 39.

The square root of 45544278 is about 6748.6500872397. The cubic root of 45544278 is about 357.1176161514.

The spelling of 45544278 in words is "forty-five million, five hundred forty-four thousand, two hundred seventy-eight".