45247039 has 4 divisors (see below), whose sum is σ = 45264960. Its totient is φ = 45229120.

The previous prime is 45247031. The next prime is 45247057. The reversal of 45247039 is 93074254.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45247039 - 2³ = 45247031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45246995 and 45247013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45247031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4399 + ... + 10480.

It is an arithmetic number, because the mean of its divisors is an integer number (11316240).

Almost surely, 2^45247039 is an apocalyptic number.

45247039 is a deficient number, since it is larger than the sum of its proper divisors (17921).

45247039 is a wasteful number, since it uses less digits than its factorization.

45247039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17920.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 45247039 is about 6726.5919305396. The cubic root of 45247039 is about 356.3390254990.

The spelling of 45247039 in words is "forty-five million, two hundred forty-seven thousand, thirty-nine".