2372281 has 4 divisors (see below), whose sum is σ = 2404852. Its totient is φ = 2339712.

The previous prime is 2372257. The next prime is 2372303. The reversal of 2372281 is 1822732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1666681 + 705600 = 1291^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 2372281 - 2¹⁷ = 2241209 is a prime.

It is a super-2 number, since 2×2372281² = 11255434285922, which contains 22 as substring.

It is a Duffinian number.

2372281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2372221) 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, 16176 + ... + 16321.

It is an arithmetic number, because the mean of its divisors is an integer number (601213).

2^2372281 is an apocalyptic number.

It is an amenable number.

2372281 is a deficient number, since it is larger than the sum of its proper divisors (32571).

2372281 is an equidigital number, since it uses as much as digits as its factorization.

2372281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32570.

The product of its digits is 1344, while the sum is 25.

The square root of 2372281 is about 1540.2210880260. The cubic root of 2372281 is about 133.3691480178.

The spelling of 2372281 in words is "two million, three hundred seventy-two thousand, two hundred eighty-one".