45525721 has 2 divisors, whose sum is σ = 45525722. Its totient is φ = 45525720.

The previous prime is 45525709. The next prime is 45525731. The reversal of 45525721 is 12752554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36905625 + 8620096 = 6075^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 45525721 - 2²¹ = 43428569 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45525731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22762860 + 22762861.

It is an arithmetic number, because the mean of its divisors is an integer number (22762861).

Almost surely, 2^45525721 is an apocalyptic number.

It is an amenable number.

45525721 is a deficient number, since it is larger than the sum of its proper divisors (1).

45525721 is an equidigital number, since it uses as much as digits as its factorization.

45525721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14000, while the sum is 31.

The square root of 45525721 is about 6747.2750796155. The cubic root of 45525721 is about 357.0691070802.

The spelling of 45525721 in words is "forty-five million, five hundred twenty-five thousand, seven hundred twenty-one".