256701033 has 18 divisors (see below), whose sum is σ = 373337406. Its totient is φ = 169966272.

The previous prime is 256701031. The next prime is 256701043. The reversal of 256701033 is 330107652.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 139996224 + 116704809 = 11832^2 + 10803^2 .

It is not a de Polignac number, because 256701033 - 2¹ = 256701031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256700988 and 256701006.

It is not an unprimeable number, because it can be changed into a prime (256701031) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 268885 + ... + 269837.

It is an arithmetic number, because the mean of its divisors is an integer number (20740967).

Almost surely, 2^256701033 is an apocalyptic number.

It is an amenable number.

256701033 is a deficient number, since it is larger than the sum of its proper divisors (116636373).

256701033 is an equidigital number, since it uses as much as digits as its factorization.

256701033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 256701033 is about 16021.8923039696. The cubic root of 256701033 is about 635.5394865570.

Adding to 256701033 its reverse (330107652), we get a palindrome (586808685).

The spelling of 256701033 in words is "two hundred fifty-six million, seven hundred one thousand, thirty-three".