253556554553 has 2 divisors, whose sum is σ = 253556554554. Its totient is φ = 253556554552.

The previous prime is 253556554549. The next prime is 253556554583. The reversal of 253556554553 is 355455655352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247712257849 + 5844296704 = 497707^2 + 76448^2 .

It is a cyclic number.

It is not a de Polignac number, because 253556554553 - 2² = 253556554549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253556554495 and 253556554504.

It is not a weakly prime, because it can be changed into another prime (253556554513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126778277276 + 126778277277.

It is an arithmetic number, because the mean of its divisors is an integer number (126778277277).

Almost surely, 2^253556554553 is an apocalyptic number.

It is an amenable number.

253556554553 is a deficient number, since it is larger than the sum of its proper divisors (1).

253556554553 is an equidigital number, since it uses as much as digits as its factorization.

253556554553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33750000, while the sum is 53.

The spelling of 253556554553 in words is "two hundred fifty-three billion, five hundred fifty-six million, five hundred fifty-four thousand, five hundred fifty-three".