45488521 has 8 divisors (see below), whose sum is σ = 49347144. Its totient is φ = 41681280.

The previous prime is 45488491. The next prime is 45488533. The reversal of 45488521 is 12588454.

It can be written as a sum of positive squares in 4 ways, for example, as 2073600 + 43414921 = 1440^2 + 6589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45488521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45488551) 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, 10990 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (6168393).

Almost surely, 2^45488521 is an apocalyptic number.

It is an amenable number.

45488521 is a deficient number, since it is larger than the sum of its proper divisors (3858623).

45488521 is a wasteful number, since it uses less digits than its factorization.

45488521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25691.

The product of its digits is 51200, while the sum is 37.

The square root of 45488521 is about 6744.5178478524. The cubic root of 45488521 is about 356.9718244155.

It can be divided in two parts, 45 and 488521, that added together give a triangular number (488566 = T₉₈₈).

The spelling of 45488521 in words is "forty-five million, four hundred eighty-eight thousand, five hundred twenty-one".