2775481 has 4 divisors (see below), whose sum is σ = 2850532. Its totient is φ = 2700432.

The previous prime is 2775469. The next prime is 2775499. The reversal of 2775481 is 1845772.

It is a happy number.

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 2611456 + 164025 = 1616^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 2775481 - 2⁵ = 2775449 is a prime.

It is a super-2 number, since 2×2775481² = 15406589562722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2775431) 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, 37470 + ... + 37543.

It is an arithmetic number, because the mean of its divisors is an integer number (712633).

2^2775481 is an apocalyptic number.

It is an amenable number.

2775481 is a deficient number, since it is larger than the sum of its proper divisors (75051).

2775481 is an equidigital number, since it uses as much as digits as its factorization.

2775481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75050.

The product of its digits is 15680, while the sum is 34.

The square root of 2775481 is about 1665.9774908443. The cubic root of 2775481 is about 140.5333566524.

The spelling of 2775481 in words is "two million, seven hundred seventy-five thousand, four hundred eighty-one".