45242649 has 6 divisors (see below), whose sum is σ = 65350506. Its totient is φ = 30161760.

The previous prime is 45242599. The next prime is 45242653. The reversal of 45242649 is 94624254.

45242649 is a `hidden beast` number, since 4 + 5 + 2 + 4 + 2 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26163225 + 19079424 = 5115^2 + 4368^2 .

It is not a de Polignac number, because 45242649 - 2¹² = 45238553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45292649) 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, 2513472 + ... + 2513489.

It is an arithmetic number, because the mean of its divisors is an integer number (10891751).

Almost surely, 2^45242649 is an apocalyptic number.

It is an amenable number.

45242649 is a deficient number, since it is larger than the sum of its proper divisors (20107857).

45242649 is a wasteful number, since it uses less digits than its factorization.

45242649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026967 (or 5026964 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 45242649 is about 6726.2656058172. The cubic root of 45242649 is about 356.3275007750.

The spelling of 45242649 in words is "forty-five million, two hundred forty-two thousand, six hundred forty-nine".