401603505253 has 2 divisors, whose sum is σ = 401603505254. Its totient is φ = 401603505252.

The previous prime is 401603505221. The next prime is 401603505371. The reversal of 401603505253 is 352505306104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259408899684 + 142194605569 = 509322^2 + 377087^2 .

It is a cyclic number.

It is not a de Polignac number, because 401603505253 - 2⁵ = 401603505221 is a prime.

It is a super-2 number, since 2×401603505253² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401603502253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200801752626 + 200801752627.

It is an arithmetic number, because the mean of its divisors is an integer number (200801752627).

Almost surely, 2^401603505253 is an apocalyptic number.

It is an amenable number.

401603505253 is a deficient number, since it is larger than the sum of its proper divisors (1).

401603505253 is an equidigital number, since it uses as much as digits as its factorization.

401603505253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 401603505253 in words is "four hundred one billion, six hundred three million, five hundred five thousand, two hundred fifty-three".