45243261 has 24 divisors (see below), whose sum is σ = 74944064. Its totient is φ = 25764480.

The previous prime is 45243227. The next prime is 45243269. The reversal of 45243261 is 16234254.

It is not a de Polignac number, because 45243261 - 2⁶ = 45243197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45243269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20166 + ... + 22296.

Almost surely, 2^45243261 is an apocalyptic number.

It is an amenable number.

45243261 is a deficient number, since it is larger than the sum of its proper divisors (29700803).

45243261 is a wasteful number, since it uses less digits than its factorization.

45243261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481 (or 2478 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 45243261 is about 6726.3110989606. The cubic root of 45243261 is about 356.3291074555.

The spelling of 45243261 in words is "forty-five million, two hundred forty-three thousand, two hundred sixty-one".