45665140 has 48 divisors (see below), whose sum is σ = 101566080. Its totient is φ = 17216640.

The previous prime is 45665131. The next prime is 45665161. The reversal of 45665140 is 4156654.

It is a super-2 number, since 2×45665140² = 4170610022439200, which contains 22 as substring.

It is a congruent number.

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, 24025 + ... + 25855.

It is an arithmetic number, because the mean of its divisors is an integer number (2115960).

Almost surely, 2^45665140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45665140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50783040).

45665140 is an abundant number, since it is smaller than the sum of its proper divisors (55900940).

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

45665140 is a wasteful number, since it uses less digits than its factorization.

45665140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 45665140 is about 6757.5986859239. The cubic root of 45665140 is about 357.4332344714.

The spelling of 45665140 in words is "forty-five million, six hundred sixty-five thousand, one hundred forty".