255402121453 has 2 divisors, whose sum is σ = 255402121454. Its totient is φ = 255402121452.

The previous prime is 255402121433. The next prime is 255402121463. The reversal of 255402121453 is 354121204552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194094875844 + 61307245609 = 440562^2 + 247603^2 .

It is a cyclic number.

It is not a de Polignac number, because 255402121453 - 2³⁷ = 117963167981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255402121433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127701060726 + 127701060727.

It is an arithmetic number, because the mean of its divisors is an integer number (127701060727).

Almost surely, 2^255402121453 is an apocalyptic number.

It is an amenable number.

255402121453 is a deficient number, since it is larger than the sum of its proper divisors (1).

255402121453 is an equidigital number, since it uses as much as digits as its factorization.

255402121453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 255402121453 in words is "two hundred fifty-five billion, four hundred two million, one hundred twenty-one thousand, four hundred fifty-three".