2241556397 has 4 divisors (see below), whose sum is σ = 2241873120. Its totient is φ = 2241239676.

The previous prime is 2241556381. The next prime is 2241556399. The reversal of 2241556397 is 7936551422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2241556397 - 2⁴ = 2241556381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2241556399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147497 + ... + 161982.

It is an arithmetic number, because the mean of its divisors is an integer number (560468280).

Almost surely, 2^2241556397 is an apocalyptic number.

It is an amenable number.

2241556397 is a deficient number, since it is larger than the sum of its proper divisors (316723).

2241556397 is an equidigital number, since it uses as much as digits as its factorization.

2241556397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316722.

The product of its digits is 453600, while the sum is 44.

The square root of 2241556397 is about 47345.0778539860. The cubic root of 2241556397 is about 1308.7294942611.

The spelling of 2241556397 in words is "two billion, two hundred forty-one million, five hundred fifty-six thousand, three hundred ninety-seven".