45428015 has 4 divisors (see below), whose sum is σ = 54513624. Its totient is φ = 36342408.

The previous prime is 45427979. The next prime is 45428017. The reversal of 45428015 is 51082454.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45428015 - 2¹⁸ = 45165871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45428017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4542797 + ... + 4542806.

It is an arithmetic number, because the mean of its divisors is an integer number (13628406).

Almost surely, 2^45428015 is an apocalyptic number.

45428015 is a deficient number, since it is larger than the sum of its proper divisors (9085609).

45428015 is an equidigital number, since it uses as much as digits as its factorization.

45428015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085608.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 45428015 is about 6740.0307862798. The cubic root of 45428015 is about 356.8134802858.

The spelling of 45428015 in words is "forty-five million, four hundred twenty-eight thousand, fifteen".