256533341 has 2 divisors, whose sum is σ = 256533342. Its totient is φ = 256533340.

The previous prime is 256533331. The next prime is 256533371. The reversal of 256533341 is 143335652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199092100 + 57441241 = 14110^2 + 7579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256533341 is a prime.

It is a Chen prime.

It is equal to p_14016893 and since 256533341 and 14016893 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 256533298 and 256533307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256533331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128266670 + 128266671.

It is an arithmetic number, because the mean of its divisors is an integer number (128266671).

Almost surely, 2^256533341 is an apocalyptic number.

It is an amenable number.

256533341 is a deficient number, since it is larger than the sum of its proper divisors (1).

256533341 is an equidigital number, since it uses as much as digits as its factorization.

256533341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 32.

The square root of 256533341 is about 16016.6582344758. The cubic root of 256533341 is about 635.4010659960.

Adding to 256533341 its reverse (143335652), we get a palindrome (399868993).

The spelling of 256533341 in words is "two hundred fifty-six million, five hundred thirty-three thousand, three hundred forty-one".