45277440 has 144 divisors (see below), whose sum is σ = 155899968. Its totient is φ = 11132928.

The previous prime is 45277373. The next prime is 45277451. The reversal of 45277440 is 4477254.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49467 + ... + 50373.

Almost surely, 2^45277440 is an apocalyptic number.

45277440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45277440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77949984).

45277440 is an abundant number, since it is smaller than the sum of its proper divisors (110622528).

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

45277440 is a wasteful number, since it uses less digits than its factorization.

45277440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 45277440 is about 6728.8513135601. The cubic root of 45277440 is about 356.4188144212.

The spelling of 45277440 in words is "forty-five million, two hundred seventy-seven thousand, four hundred forty".