45433721 has 8 divisors (see below), whose sum is σ = 45924744. Its totient is φ = 44945280.

The previous prime is 45433711. The next prime is 45433723. The reversal of 45433721 is 12733454.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19600 + 45414121 = 140^2 + 6739^2 .

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 45433721 - 2⁶ = 45433657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45433723) 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, 73811 + ... + 74423.

It is an arithmetic number, because the mean of its divisors is an integer number (5740593).

Almost surely, 2^45433721 is an apocalyptic number.

It is an amenable number.

45433721 is a deficient number, since it is larger than the sum of its proper divisors (491023).

45433721 is a wasteful number, since it uses less digits than its factorization.

45433721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its digits is 10080, while the sum is 29.

The square root of 45433721 is about 6740.4540648238. The cubic root of 45433721 is about 356.8284188832.

The spelling of 45433721 in words is "forty-five million, four hundred thirty-three thousand, seven hundred twenty-one".