45020869 has 2 divisors, whose sum is σ = 45020870. Its totient is φ = 45020868.

The previous prime is 45020863. The next prime is 45020873. The reversal of 45020869 is 96802054.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43230625 + 1790244 = 6575^2 + 1338^2 .

It is a cyclic number.

It is not a de Polignac number, because 45020869 - 2⁵ = 45020837 is a prime.

It is a super-2 number, since 2×45020869² = 4053757291030322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45020863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22510434 + 22510435.

It is an arithmetic number, because the mean of its divisors is an integer number (22510435).

Almost surely, 2^45020869 is an apocalyptic number.

It is an amenable number.

45020869 is a deficient number, since it is larger than the sum of its proper divisors (1).

45020869 is an equidigital number, since it uses as much as digits as its factorization.

45020869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 45020869 is about 6709.7592356209. The cubic root of 45020869 is about 355.7443062525.

The spelling of 45020869 in words is "forty-five million, twenty thousand, eight hundred sixty-nine".