274938553 has 2 divisors, whose sum is σ = 274938554. Its totient is φ = 274938552.

The previous prime is 274938551. The next prime is 274938571. The reversal of 274938553 is 355839472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245486224 + 29452329 = 15668^2 + 5427^2 .

It is a cyclic number.

It is not a de Polignac number, because 274938553 - 2¹ = 274938551 is a prime.

Together with 274938551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (274938551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137469276 + 137469277.

It is an arithmetic number, because the mean of its divisors is an integer number (137469277).

Almost surely, 2^274938553 is an apocalyptic number.

It is an amenable number.

274938553 is a deficient number, since it is larger than the sum of its proper divisors (1).

274938553 is an equidigital number, since it uses as much as digits as its factorization.

274938553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 46.

The square root of 274938553 is about 16581.2711515131. The cubic root of 274938553 is about 650.2472850040.

It can be divided in two parts, 27493 and 8553, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 274938553 in words is "two hundred seventy-four million, nine hundred thirty-eight thousand, five hundred fifty-three".