45733721 has 4 divisors (see below), whose sum is σ = 49891344. Its totient is φ = 41576100.

The previous prime is 45733717. The next prime is 45733733. The reversal of 45733721 is 12733754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45733721 - 2² = 45733717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45733771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2078795 + ... + 2078816.

It is an arithmetic number, because the mean of its divisors is an integer number (12472836).

Almost surely, 2^45733721 is an apocalyptic number.

It is an amenable number.

45733721 is a deficient number, since it is larger than the sum of its proper divisors (4157623).

45733721 is a wasteful number, since it uses less digits than its factorization.

45733721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157622.

The product of its digits is 17640, while the sum is 32.

The square root of 45733721 is about 6762.6711438602. The cubic root of 45733721 is about 357.6120788986.

The spelling of 45733721 in words is "forty-five million, seven hundred thirty-three thousand, seven hundred twenty-one".