2947457 has 6 divisors (see below), whose sum is σ = 3030678. Its totient is φ = 2866464.

The previous prime is 2947447. The next prime is 2947471. The reversal of 2947457 is 7547492.

2947457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 919681 + 2027776 = 959^2 + 1424^2 .

It is not a de Polignac number, because 2947457 - 2¹² = 2943361 is a prime.

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 2947457.

It is not an unprimeable number, because it can be changed into a prime (2947447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (505113).

2^2947457 is an apocalyptic number.

It is an amenable number.

2947457 is a deficient number, since it is larger than the sum of its proper divisors (83221).

2947457 is an equidigital number, since it uses as much as digits as its factorization.

2947457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2190 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 2947457 is about 1716.8159482018. The cubic root of 2947457 is about 143.3779916129.

The spelling of 2947457 in words is "two million, nine hundred forty-seven thousand, four hundred fifty-seven".