654838253 has 2 divisors, whose sum is σ = 654838254. Its totient is φ = 654838252.

The previous prime is 654838231. The next prime is 654838297. The reversal of 654838253 is 352838456.

It is an a-pointer prime, because the next prime (654838297) can be obtained adding 654838253 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 646532329 + 8305924 = 25427^2 + 2882^2 .

It is a cyclic number.

It is not a de Polignac number, because 654838253 - 2¹² = 654834157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654834253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327419126 + 327419127.

It is an arithmetic number, because the mean of its divisors is an integer number (327419127).

Almost surely, 2^654838253 is an apocalyptic number.

It is an amenable number.

654838253 is a deficient number, since it is larger than the sum of its proper divisors (1).

654838253 is an equidigital number, since it uses as much as digits as its factorization.

654838253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 44.

The square root of 654838253 is about 25589.8075999020. The cubic root of 654838253 is about 868.3830684224.

The spelling of 654838253 in words is "six hundred fifty-four million, eight hundred thirty-eight thousand, two hundred fifty-three".