45265721 has 8 divisors (see below), whose sum is σ = 46377984. Its totient is φ = 44165520.

The previous prime is 45265711. The next prime is 45265757. The reversal of 45265721 is 12756254.

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

It is not a de Polignac number, because 45265721 - 2¹⁸ = 45003577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45265711) 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, 4826 + ... + 10668.

It is an arithmetic number, because the mean of its divisors is an integer number (5797248).

Almost surely, 2^45265721 is an apocalyptic number.

It is an amenable number.

45265721 is a deficient number, since it is larger than the sum of its proper divisors (1112263).

45265721 is a wasteful number, since it uses less digits than its factorization.

45265721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

The product of its digits is 16800, while the sum is 32.

The square root of 45265721 is about 6727.9804547873. The cubic root of 45265721 is about 356.3880615598.

The spelling of 45265721 in words is "forty-five million, two hundred sixty-five thousand, seven hundred twenty-one".