45681469 has 2 divisors, whose sum is σ = 45681470. Its totient is φ = 45681468.

The previous prime is 45681413. The next prime is 45681479. The reversal of 45681469 is 96418654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 3755844 = 6475^2 + 1938^2 .

It is a cyclic number.

It is not a de Polignac number, because 45681469 - 2⁷ = 45681341 is a prime.

It is a super-2 number, since 2×45681469² = 4173593219995922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45681479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22840734 + 22840735.

It is an arithmetic number, because the mean of its divisors is an integer number (22840735).

Almost surely, 2^45681469 is an apocalyptic number.

It is an amenable number.

45681469 is a deficient number, since it is larger than the sum of its proper divisors (1).

45681469 is an equidigital number, since it uses as much as digits as its factorization.

45681469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 45681469 is about 6758.8067733883. The cubic root of 45681469 is about 357.4758332075.

The spelling of 45681469 in words is "forty-five million, six hundred eighty-one thousand, four hundred sixty-nine".