2775535421 has 2 divisors, whose sum is σ = 2775535422. Its totient is φ = 2775535420.

The previous prime is 2775535397. The next prime is 2775535423. The reversal of 2775535421 is 1245355772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2746912921 + 28622500 = 52411^2 + 5350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2775535421 - 2¹⁰ = 2775534397 is a prime.

Together with 2775535423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2775535423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387767710 + 1387767711.

It is an arithmetic number, because the mean of its divisors is an integer number (1387767711).

Almost surely, 2^2775535421 is an apocalyptic number.

It is an amenable number.

2775535421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2775535421 is an equidigital number, since it uses as much as digits as its factorization.

2775535421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294000, while the sum is 41.

The square root of 2775535421 is about 52683.3505103842. The cubic root of 2775535421 is about 1405.3427516178.

The spelling of 2775535421 in words is "two billion, seven hundred seventy-five million, five hundred thirty-five thousand, four hundred twenty-one".