2497147 has 4 divisors (see below), whose sum is σ = 2644056. Its totient is φ = 2350240.

The previous prime is 2497129. The next prime is 2497163. The reversal of 2497147 is 7417942.

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 2497147 - 2¹⁵ = 2464379 is a prime.

It is a Duffinian number.

2497147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2497177) 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, 73429 + ... + 73462.

It is an arithmetic number, because the mean of its divisors is an integer number (661014).

2^2497147 is an apocalyptic number.

2497147 is a deficient number, since it is larger than the sum of its proper divisors (146909).

2497147 is a wasteful number, since it uses less digits than its factorization.

2497147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146908.

The product of its digits is 14112, while the sum is 34.

The square root of 2497147 is about 1580.2363747237. The cubic root of 2497147 is about 135.6692329548.

It can be divided in two parts, 249 and 7147, that added together give a square (7396 = 86²).

The spelling of 2497147 in words is "two million, four hundred ninety-seven thousand, one hundred forty-seven".