55274993 has 2 divisors, whose sum is σ = 55274994. Its totient is φ = 55274992.

The previous prime is 55274959. The next prime is 55275001. The reversal of 55274993 is 39947255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48762289 + 6512704 = 6983^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 55274993 - 2¹⁶ = 55209457 is a prime.

It is not a weakly prime, because it can be changed into another prime (55274903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637496 + 27637497.

It is an arithmetic number, because the mean of its divisors is an integer number (27637497).

Almost surely, 2^55274993 is an apocalyptic number.

It is an amenable number.

55274993 is a deficient number, since it is larger than the sum of its proper divisors (1).

55274993 is an equidigital number, since it uses as much as digits as its factorization.

55274993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 44.

The square root of 55274993 is about 7434.7153946873. The cubic root of 55274993 is about 380.9280019550.

The spelling of 55274993 in words is "fifty-five million, two hundred seventy-four thousand, nine hundred ninety-three".