45491592 has 64 divisors (see below), whose sum is σ = 123266880. Its totient is φ = 13934592.

The previous prime is 45491573. The next prime is 45491603. The reversal of 45491592 is 29519454.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 45491592.

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 15 ways as a sum of consecutive naturals, for example, 16248 + ... + 18840.

It is an arithmetic number, because the mean of its divisors is an integer number (1926045).

Almost surely, 2^45491592 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 45491592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61633440).

45491592 is an abundant number, since it is smaller than the sum of its proper divisors (77775288).

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

45491592 is a wasteful number, since it uses less digits than its factorization.

45491592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662 (or 2658 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 45491592 is about 6744.7455103955. The cubic root of 45491592 is about 356.9798574737.

The spelling of 45491592 in words is "forty-five million, four hundred ninety-one thousand, five hundred ninety-two".