45421488 has 60 divisors (see below), whose sum is σ = 145279888. Its totient is φ = 12977280.

The previous prime is 45421487. The next prime is 45421507. The reversal of 45421488 is 88412454.

It is a super-2 number, since 2×45421488² = 4126223144268288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (45421483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21523 + ... + 23538.

Almost surely, 2^45421488 is an apocalyptic number.

45421488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

45421488 is an abundant number, since it is smaller than the sum of its proper divisors (99858400).

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

45421488 is a wasteful number, since it uses less digits than its factorization.

45421488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45082 (or 45073 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 45421488 is about 6739.5465722851. The cubic root of 45421488 is about 356.7963907348.

The spelling of 45421488 in words is "forty-five million, four hundred twenty-one thousand, four hundred eighty-eight".