45278247 has 16 divisors (see below), whose sum is σ = 69181952. Its totient is φ = 25803360.

The previous prime is 45278239. The next prime is 45278257. The reversal of 45278247 is 74287254.

45278247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45278247 - 2³ = 45278239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45278257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5622 + ... + 11052.

It is an arithmetic number, because the mean of its divisors is an integer number (4323872).

Almost surely, 2^45278247 is an apocalyptic number.

45278247 is a deficient number, since it is larger than the sum of its proper divisors (23903705).

45278247 is a wasteful number, since it uses less digits than its factorization.

45278247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838.

The product of its digits is 125440, while the sum is 39.

The square root of 45278247 is about 6728.9112789514. The cubic root of 45278247 is about 356.4209319457.

The spelling of 45278247 in words is "forty-five million, two hundred seventy-eight thousand, two hundred forty-seven".