45915220 has 24 divisors (see below), whose sum is σ = 103839624. Its totient is φ = 16953216.

The previous prime is 45915217. The next prime is 45915223. The reversal of 45915220 is 2251954.

45915220 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 (45915217) and next prime (45915223).

It can be written as a sum of positive squares in 4 ways, for example, as 944784 + 44970436 = 972^2 + 6706^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45915223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 88039 + ... + 88558.

It is an arithmetic number, because the mean of its divisors is an integer number (4326651).

Almost surely, 2^45915220 is an apocalyptic number.

It is an amenable number.

45915220 is an abundant number, since it is smaller than the sum of its proper divisors (57924404).

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

45915220 is a wasteful number, since it uses less digits than its factorization.

45915220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176619 (or 176617 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 45915220 is about 6776.0770361619. The cubic root of 45915220 is about 358.0845279634.

The spelling of 45915220 in words is "forty-five million, nine hundred fifteen thousand, two hundred twenty".