45447121 has 2 divisors, whose sum is σ = 45447122. Its totient is φ = 45447120.

The previous prime is 45447097. The next prime is 45447133. The reversal of 45447121 is 12174454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45037521 + 409600 = 6711^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 45447121 - 2¹³ = 45438929 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45447121.

It is not a weakly prime, because it can be changed into another prime (45447151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22723560 + 22723561.

It is an arithmetic number, because the mean of its divisors is an integer number (22723561).

Almost surely, 2^45447121 is an apocalyptic number.

It is an amenable number.

45447121 is a deficient number, since it is larger than the sum of its proper divisors (1).

45447121 is an equidigital number, since it uses as much as digits as its factorization.

45447121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 28.

The square root of 45447121 is about 6741.4479898609. The cubic root of 45447121 is about 356.8634958459.

The spelling of 45447121 in words is "forty-five million, four hundred forty-seven thousand, one hundred twenty-one".