45215553 has 16 divisors (see below), whose sum is σ = 63305280. Its totient is φ = 28666176.

The previous prime is 45215549. The next prime is 45215561. The reversal of 45215553 is 35551254.

It is a happy number.

It is not a de Polignac number, because 45215553 - 2² = 45215549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45215553.

It is not an unprimeable number, because it can be changed into a prime (45215503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1951 + ... + 9707.

It is an arithmetic number, because the mean of its divisors is an integer number (3956580).

Almost surely, 2^45215553 is an apocalyptic number.

It is an amenable number.

45215553 is a deficient number, since it is larger than the sum of its proper divisors (18089727).

45215553 is a wasteful number, since it uses less digits than its factorization.

45215553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856.

The product of its digits is 15000, while the sum is 30.

The square root of 45215553 is about 6724.2511107186. The cubic root of 45215553 is about 356.2563512564.

The spelling of 45215553 in words is "forty-five million, two hundred fifteen thousand, five hundred fifty-three".