253554455321 has 2 divisors, whose sum is σ = 253554455322. Its totient is φ = 253554455320.

The previous prime is 253554455311. The next prime is 253554455387. The reversal of 253554455321 is 123554455352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247088526400 + 6465928921 = 497080^2 + 80411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253554455321 is a prime.

It is not a weakly prime, because it can be changed into another prime (253554455311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126777227660 + 126777227661.

It is an arithmetic number, because the mean of its divisors is an integer number (126777227661).

Almost surely, 2^253554455321 is an apocalyptic number.

It is an amenable number.

253554455321 is a deficient number, since it is larger than the sum of its proper divisors (1).

253554455321 is an equidigital number, since it uses as much as digits as its factorization.

253554455321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800000, while the sum is 44.

The spelling of 253554455321 in words is "two hundred fifty-three billion, five hundred fifty-four million, four hundred fifty-five thousand, three hundred twenty-one".