45494540 has 72 divisors (see below), whose sum is σ = 119719152. Its totient is φ = 14394240.

The previous prime is 45494509. The next prime is 45494557. The reversal of 45494540 is 4549454.

45494540 = 1061² + 1062² + ... + 1099².

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 45494540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10955 + ... + 14525.

It is an arithmetic number, because the mean of its divisors is an integer number (1662766).

Almost surely, 2^45494540 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 45494540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59859576).

45494540 is an abundant number, since it is smaller than the sum of its proper divisors (74224612).

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

45494540 is a wasteful number, since it uses less digits than its factorization.

45494540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 3598 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 45494540 is about 6744.9640473467. The cubic root of 45494540 is about 356.9875684509.

The spelling of 45494540 in words is "forty-five million, four hundred ninety-four thousand, five hundred forty".