45525421 has 2 divisors, whose sum is σ = 45525422. Its totient is φ = 45525420.

The previous prime is 45525383. The next prime is 45525449. The reversal of 45525421 is 12452554.

It is an a-pointer prime, because the next prime (45525449) can be obtained adding 45525421 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25140196 + 20385225 = 5014^2 + 4515^2 .

It is a cyclic number.

It is not a de Polignac number, because 45525421 - 2⁹ = 45524909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45525421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45525481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22762710 + 22762711.

It is an arithmetic number, because the mean of its divisors is an integer number (22762711).

Almost surely, 2^45525421 is an apocalyptic number.

It is an amenable number.

45525421 is a deficient number, since it is larger than the sum of its proper divisors (1).

45525421 is an equidigital number, since it uses as much as digits as its factorization.

45525421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8000, while the sum is 28.

The square root of 45525421 is about 6747.2528483821. The cubic root of 45525421 is about 357.0683227546.

Adding to 45525421 its reverse (12452554), we get a palindrome (57977975).

The spelling of 45525421 in words is "forty-five million, five hundred twenty-five thousand, four hundred twenty-one".