45221232 has 40 divisors (see below), whose sum is σ = 133511296. Its totient is φ = 12920256.

The previous prime is 45221227. The next prime is 45221257. The reversal of 45221232 is 23212254.

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

It is a junction number, because it is equal to n+sod(n) for n = 45221199 and 45221208.

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, 66958 + ... + 67629.

Almost surely, 2^45221232 is an apocalyptic number.

45221232 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

45221232 is an abundant number, since it is smaller than the sum of its proper divisors (88290064).

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

45221232 is a wasteful number, since it uses less digits than its factorization.

45221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134605 (or 134599 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 45221232 is about 6724.6733749677. The cubic root of 45221232 is about 356.2712657050.

Adding to 45221232 its reverse (23212254), we get a palindrome (68433486).

The spelling of 45221232 in words is "forty-five million, two hundred twenty-one thousand, two hundred thirty-two".