2775469 has 2 divisors, whose sum is σ = 2775470. Its totient is φ = 2775468.

The previous prime is 2775457. The next prime is 2775499. The reversal of 2775469 is 9645772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2762244 + 13225 = 1662^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2775469 - 2⁹ = 2774957 is a prime.

It is a super-2 number, since 2×2775469² = 15406456339922, which contains 22 as substring.

2775469 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2775449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387734 + 1387735.

It is an arithmetic number, because the mean of its divisors is an integer number (1387735).

2^2775469 is an apocalyptic number.

It is an amenable number.

2775469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2775469 is an equidigital number, since it uses as much as digits as its factorization.

2775469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 2775469 is about 1665.9738893512. The cubic root of 2775469 is about 140.5331541166.

The spelling of 2775469 in words is "two million, seven hundred seventy-five thousand, four hundred sixty-nine".