45516220 has 24 divisors (see below), whose sum is σ = 96465600. Its totient is φ = 18038592.

The previous prime is 45516217. The next prime is 45516221. The reversal of 45516220 is 2261554.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45516221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8260 + ... + 12619.

It is an arithmetic number, because the mean of its divisors is an integer number (4019400).

Almost surely, 2^45516220 is an apocalyptic number.

It is an amenable number.

45516220 is an abundant number, since it is smaller than the sum of its proper divisors (50949380).

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

45516220 is a wasteful number, since it uses less digits than its factorization.

45516220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20997 (or 20995 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 45516220 is about 6746.5709808761. The cubic root of 45516220 is about 357.0442658144.

Adding to 45516220 its reverse (2261554), we get a palindrome (47777774).

The spelling of 45516220 in words is "forty-five million, five hundred sixteen thousand, two hundred twenty".