45233721 has 64 divisors (see below), whose sum is σ = 76778240. Its totient is φ = 26453952.

The previous prime is 45233689. The next prime is 45233723. The reversal of 45233721 is 12733254.

45233721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45233721 - 2⁵ = 45233689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45233723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1051926 + ... + 1051968.

It is an arithmetic number, because the mean of its divisors is an integer number (1199660).

Almost surely, 2^45233721 is an apocalyptic number.

It is an amenable number.

45233721 is a deficient number, since it is larger than the sum of its proper divisors (31544519).

45233721 is an equidigital number, since it uses as much as digits as its factorization.

45233721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 96 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 45233721 is about 6725.6019061494. The cubic root of 45233721 is about 356.3040604940.

Adding to 45233721 its reverse (12733254), we get a palindrome (57966975).

It can be divided in two parts, 45233 and 721, that added together give a palindrome (45954).

The spelling of 45233721 in words is "forty-five million, two hundred thirty-three thousand, seven hundred twenty-one".