2772391 has 2 divisors, whose sum is σ = 2772392. Its totient is φ = 2772390.

The previous prime is 2772383. The next prime is 2772409. The reversal of 2772391 is 1932772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2772391 - 2³ = 2772383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2772311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386195 + 1386196.

It is an arithmetic number, because the mean of its divisors is an integer number (1386196).

2^2772391 is an apocalyptic number.

2772391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772391 is an equidigital number, since it uses as much as digits as its factorization.

2772391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 2772391 is about 1665.0498491036. The cubic root of 2772391 is about 140.4811843954.

The spelling of 2772391 in words is "two million, seven hundred seventy-two thousand, three hundred ninety-one".