45012220 has 24 divisors (see below), whose sum is σ = 103119408. Its totient is φ = 16368000.

The previous prime is 45012203. The next prime is 45012241. The reversal of 45012220 is 2221054.

It is a junction number, because it is equal to n+sod(n) for n = 45012194 and 45012203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102081 + ... + 102520.

It is an arithmetic number, because the mean of its divisors is an integer number (4296642).

Almost surely, 2^45012220 is an apocalyptic number.

It is an amenable number.

45012220 is an abundant number, since it is smaller than the sum of its proper divisors (58107188).

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

45012220 is a wasteful number, since it uses less digits than its factorization.

45012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204621 (or 204619 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 45012220 is about 6709.1146956957. The cubic root of 45012220 is about 355.7215240063.

Adding to 45012220 its reverse (2221054), we get a palindrome (47233274).

The spelling of 45012220 in words is "forty-five million, twelve thousand, two hundred twenty".