45020215 has 16 divisors (see below), whose sum is σ = 58705920. Its totient is φ = 33017760.

The previous prime is 45020207. The next prime is 45020243. The reversal of 45020215 is 51202054.

It is not a de Polignac number, because 45020215 - 2³ = 45020207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 45020192 and 45020201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4699 + ... + 10588.

It is an arithmetic number, because the mean of its divisors is an integer number (3669120).

Almost surely, 2^45020215 is an apocalyptic number.

45020215 is a deficient number, since it is larger than the sum of its proper divisors (13685705).

45020215 is a wasteful number, since it uses less digits than its factorization.

45020215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15342.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 45020215 is about 6709.7105004613. The cubic root of 45020215 is about 355.7425836594.

Adding to 45020215 its reverse (51202054), we get a palindrome (96222269).

The spelling of 45020215 in words is "forty-five million, twenty thousand, two hundred fifteen".