2497847421 has 8 divisors (see below), whose sum is σ = 3330863424. Its totient is φ = 1665031520.

The previous prime is 2497847399. The next prime is 2497847437. The reversal of 2497847421 is 1247487942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2497847421 - 2²¹ = 2495750269 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2497847461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17961 + ... + 72926.

It is an arithmetic number, because the mean of its divisors is an integer number (416357928).

Almost surely, 2^2497847421 is an apocalyptic number.

It is an amenable number.

2497847421 is a deficient number, since it is larger than the sum of its proper divisors (833016003).

2497847421 is an equidigital number, since it uses as much as digits as its factorization.

2497847421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100051.

The product of its digits is 903168, while the sum is 48.

The square root of 2497847421 is about 49978.4695744077. The cubic root of 2497847421 is about 1356.8191632199.

The spelling of 2497847421 in words is "two billion, four hundred ninety-seven million, eight hundred forty-seven thousand, four hundred twenty-one".