45270909 has 6 divisors (see below), whose sum is σ = 65391326. Its totient is φ = 30180600.

The previous prime is 45270889. The next prime is 45270919. The reversal of 45270909 is 90907254.

It can be written as a sum of positive squares in only one way, i.e., 39879225 + 5391684 = 6315^2 + 2322^2 .

It is not a de Polignac number, because 45270909 - 2¹² = 45266813 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45270919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2515042 + ... + 2515059.

Almost surely, 2^45270909 is an apocalyptic number.

It is an amenable number.

45270909 is a deficient number, since it is larger than the sum of its proper divisors (20120417).

45270909 is a wasteful number, since it uses less digits than its factorization.

45270909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030107 (or 5030104 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 45270909 is about 6728.3659977739. The cubic root of 45270909 is about 356.4016765028.

The spelling of 45270909 in words is "forty-five million, two hundred seventy thousand, nine hundred nine".