45168540 has 24 divisors (see below), whose sum is σ = 126472080. Its totient is φ = 12044928.

The previous prime is 45168523. The next prime is 45168547. The reversal of 45168540 is 4586154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45168547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376345 + ... + 376464.

It is an arithmetic number, because the mean of its divisors is an integer number (5269670).

Almost surely, 2^45168540 is an apocalyptic number.

It is an amenable number.

45168540 is an abundant number, since it is smaller than the sum of its proper divisors (81303540).

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

45168540 is a wasteful number, since it uses less digits than its factorization.

45168540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752821 (or 752819 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 45168540 is about 6720.7544219381. The cubic root of 45168540 is about 356.1328355860.

It can be divided in two parts, 451685 and 40, that added together give a triangular number (451725 = T₉₅₀).

The spelling of 45168540 in words is "forty-five million, one hundred sixty-eight thousand, five hundred forty".