45251313220 has 12 divisors (see below), whose sum is σ = 95027757804. Its totient is φ = 18100525280.

The previous prime is 45251313209. The next prime is 45251313251. The reversal of 45251313220 is 2231315254.

It can be written as a sum of positive squares in 2 ways, for example, as 21591951364 + 23659361856 = 146942^2 + 153816^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131282811 + ... + 1131282850.

It is an arithmetic number, because the mean of its divisors is an integer number (7918979817).

Almost surely, 2^45251313220 is an apocalyptic number.

It is an amenable number.

45251313220 is an abundant number, since it is smaller than the sum of its proper divisors (49776444584).

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

45251313220 is a wasteful number, since it uses less digits than its factorization.

45251313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262565670 (or 2262565668 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 45251313220 its reverse (2231315254), we get a palindrome (47482628474).

The spelling of 45251313220 in words is "forty-five billion, two hundred fifty-one million, three hundred thirteen thousand, two hundred twenty".