506933381 has 2 divisors, whose sum is σ = 506933382. Its totient is φ = 506933380.

The previous prime is 506933351. The next prime is 506933431. The reversal of 506933381 is 183339605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490401025 + 16532356 = 22145^2 + 4066^2 .

It is a cyclic number.

It is not a de Polignac number, because 506933381 - 2¹⁸ = 506671237 is a prime.

It is a super-2 number, since 2×506933381² = 513962905544182322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506933351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253466690 + 253466691.

It is an arithmetic number, because the mean of its divisors is an integer number (253466691).

Almost surely, 2^506933381 is an apocalyptic number.

It is an amenable number.

506933381 is a deficient number, since it is larger than the sum of its proper divisors (1).

506933381 is an equidigital number, since it uses as much as digits as its factorization.

506933381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 506933381 is about 22515.1811229668. The cubic root of 506933381 is about 797.3523832609.

The spelling of 506933381 in words is "five hundred six million, nine hundred thirty-three thousand, three hundred eighty-one".