4545869 has 2 divisors, whose sum is σ = 4545870. Its totient is φ = 4545868.

The previous prime is 4545859. The next prime is 4545889. The reversal of 4545869 is 9685454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3020644 + 1525225 = 1738^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 4545869 - 2²⁰ = 3497293 is a prime.

It is a super-2 number, since 2×4545869² = 41329849930322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4545839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272934 + 2272935.

It is an arithmetic number, because the mean of its divisors is an integer number (2272935).

Almost surely, 2^4545869 is an apocalyptic number.

It is an amenable number.

4545869 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545869 is an equidigital number, since it uses as much as digits as its factorization.

4545869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The square root of 4545869 is about 2132.1043595472. The cubic root of 4545869 is about 165.6554157502.

The spelling of 4545869 in words is "four million, five hundred forty-five thousand, eight hundred sixty-nine".