2545047 has 8 divisors (see below), whose sum is σ = 3770480. Its totient is φ = 1696680.

The previous prime is 2545021. The next prime is 2545057. The reversal of 2545047 is 7405452.

It is not a de Polignac number, because 2545047 - 2⁸ = 2544791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 94261 = 2545047 / (2 + 5 + 4 + 5 + 0 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2545047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545057) 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 7 ways as a sum of consecutive naturals, for example, 47104 + ... + 47157.

It is an arithmetic number, because the mean of its divisors is an integer number (471310).

2^2545047 is an apocalyptic number.

2545047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2545047 is a deficient number, since it is larger than the sum of its proper divisors (1225433).

2545047 is an equidigital number, since it uses as much as digits as its factorization.

2545047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94270 (or 94264 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 2545047 is about 1595.3203440062. The cubic root of 2545047 is about 136.5312089007.

The spelling of 2545047 in words is "two million, five hundred forty-five thousand, forty-seven".