45288921 has 8 divisors (see below), whose sum is σ = 60692544. Its totient is φ = 30038960.

The previous prime is 45288911. The next prime is 45288941. The reversal of 45288921 is 12988254.

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

It is a cyclic number.

It is not a de Polignac number, because 45288921 - 2⁵ = 45288889 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45288921.

It is not an unprimeable number, because it can be changed into a prime (45288911) 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, 37725 + ... + 38906.

It is an arithmetic number, because the mean of its divisors is an integer number (7586568).

Almost surely, 2^45288921 is an apocalyptic number.

It is an amenable number.

45288921 is a deficient number, since it is larger than the sum of its proper divisors (15403623).

45288921 is a wasteful number, since it uses less digits than its factorization.

45288921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76831.

The product of its digits is 46080, while the sum is 39.

The square root of 45288921 is about 6729.7043768653. The cubic root of 45288921 is about 356.4489375802.

The spelling of 45288921 in words is "forty-five million, two hundred eighty-eight thousand, nine hundred twenty-one".