2774381 has 2 divisors, whose sum is σ = 2774382. Its totient is φ = 2774380.

The previous prime is 2774353. The next prime is 2774389. The reversal of 2774381 is 1834772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1713481 + 1060900 = 1309^2 + 1030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2774381 is a prime.

It is a super-2 number, since 2×2774381² = 15394379866322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2774389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387190 + 1387191.

It is an arithmetic number, because the mean of its divisors is an integer number (1387191).

2^2774381 is an apocalyptic number.

It is an amenable number.

2774381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2774381 is an equidigital number, since it uses as much as digits as its factorization.

2774381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 32.

The square root of 2774381 is about 1665.6473216140. The cubic root of 2774381 is about 140.5147884452.

The spelling of 2774381 in words is "two million, seven hundred seventy-four thousand, three hundred eighty-one".