533503381 has 2 divisors, whose sum is σ = 533503382. Its totient is φ = 533503380.

The previous prime is 533503351. The next prime is 533503433. The reversal of 533503381 is 183305335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525968356 + 7535025 = 22934^2 + 2745^2 .

It is a cyclic number.

It is not a de Polignac number, because 533503381 - 2⁵ = 533503349 is a prime.

It is a super-2 number, since 2×533503381² = 569251715076862322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (533503351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266751690 + 266751691.

It is an arithmetic number, because the mean of its divisors is an integer number (266751691).

Almost surely, 2^533503381 is an apocalyptic number.

It is an amenable number.

533503381 is a deficient number, since it is larger than the sum of its proper divisors (1).

533503381 is an equidigital number, since it uses as much as digits as its factorization.

533503381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 533503381 is about 23097.6921141485. The cubic root of 533503381 is about 811.0464456061.

The spelling of 533503381 in words is "five hundred thirty-three million, five hundred three thousand, three hundred eighty-one".