2279261 has 2 divisors, whose sum is σ = 2279262. Its totient is φ = 2279260.

The previous prime is 2279257. The next prime is 2279281. The reversal of 2279261 is 1629722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1907161 + 372100 = 1381^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 2279261 - 2² = 2279257 is a prime.

It is a super-2 number, since 2×2279261² = 10390061412242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2279281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139630 + 1139631.

It is an arithmetic number, because the mean of its divisors is an integer number (1139631).

2^2279261 is an apocalyptic number.

It is an amenable number.

2279261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2279261 is an equidigital number, since it uses as much as digits as its factorization.

2279261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 2279261 is about 1509.7221598692. The cubic root of 2279261 is about 131.6026657566.

The spelling of 2279261 in words is "two million, two hundred seventy-nine thousand, two hundred sixty-one".