45291540 has 48 divisors (see below), whose sum is σ = 144934272. Its totient is φ = 10352256.

The previous prime is 45291529. The next prime is 45291541. The reversal of 45291540 is 4519254.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 45291498 and 45291507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45291541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53499 + ... + 54338.

It is an arithmetic number, because the mean of its divisors is an integer number (3019464).

Almost surely, 2^45291540 is an apocalyptic number.

It is an amenable number.

45291540 is an abundant number, since it is smaller than the sum of its proper divisors (99642732).

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

45291540 is a wasteful number, since it uses less digits than its factorization.

45291540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107856 (or 107854 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 45291540 is about 6729.8989591226. The cubic root of 45291540 is about 356.4558084422.

The spelling of 45291540 in words is "forty-five million, two hundred ninety-one thousand, five hundred forty".