45521378 has 24 divisors (see below), whose sum is σ = 82369152. Its totient is φ = 18480312.

The previous prime is 45521369. The next prime is 45521389. The reversal of 45521378 is 87312554.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551 + ... + 9557.

It is an arithmetic number, because the mean of its divisors is an integer number (3432048).

Almost surely, 2^45521378 is an apocalyptic number.

45521378 is a deficient number, since it is larger than the sum of its proper divisors (36847774).

45521378 is a wasteful number, since it uses less digits than its factorization.

45521378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9054 (or 9035 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 45521378 is about 6746.9532383143. The cubic root of 45521378 is about 357.0577523236.

The spelling of 45521378 in words is "forty-five million, five hundred twenty-one thousand, three hundred seventy-eight".