45015222 has 24 divisors (see below), whose sum is σ = 104729976. Its totient is φ = 12861408.

The previous prime is 45015169. The next prime is 45015239. The reversal of 45015222 is 22251054.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76263 + ... + 76850.

It is an arithmetic number, because the mean of its divisors is an integer number (4363749).

Almost surely, 2^45015222 is an apocalyptic number.

45015222 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

45015222 is an abundant number, since it is smaller than the sum of its proper divisors (59714754).

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

45015222 is a wasteful number, since it uses less digits than its factorization.

45015222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153132 (or 153125 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 45015222 is about 6709.3384174597. The cubic root of 45015222 is about 355.7294318757.

Adding to 45015222 its reverse (22251054), we get a palindrome (67266276).

The spelling of 45015222 in words is "forty-five million, fifteen thousand, two hundred twenty-two".