45503640 has 256 divisors, whose sum is σ = 187084800. Its totient is φ = 9580032.

The previous prime is 45503617. The next prime is 45503641. The reversal of 45503640 is 4630554.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45503641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98049 + ... + 98511.

It is an arithmetic number, because the mean of its divisors is an integer number (730800).

Almost surely, 2^45503640 is an apocalyptic number.

45503640 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 45503640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93542400).

45503640 is an abundant number, since it is smaller than the sum of its proper divisors (141581160).

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

45503640 is a wasteful number, since it uses less digits than its factorization.

45503640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 45503640 is about 6745.6385909712. The cubic root of 45503640 is about 357.0113688915.

The spelling of 45503640 in words is "forty-five million, five hundred three thousand, six hundred forty".