255531401 has 2 divisors, whose sum is σ = 255531402. Its totient is φ = 255531400.

The previous prime is 255531359. The next prime is 255531443. The reversal of 255531401 is 104135552.

It is a balanced prime because it is at equal distance from previous prime (255531359) and next prime (255531443).

It can be written as a sum of positive squares in only one way, i.e., 252841801 + 2689600 = 15901^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 255531401 - 2⁶ = 255531337 is a prime.

It is not a weakly prime, because it can be changed into another prime (255531461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127765700 + 127765701.

It is an arithmetic number, because the mean of its divisors is an integer number (127765701).

Almost surely, 2^255531401 is an apocalyptic number.

It is an amenable number.

255531401 is a deficient number, since it is larger than the sum of its proper divisors (1).

255531401 is an equidigital number, since it uses as much as digits as its factorization.

255531401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 255531401 is about 15985.3495739067. The cubic root of 255531401 is about 634.5727599153.

Adding to 255531401 its reverse (104135552), we get a palindrome (359666953).

It can be divided in two parts, 25553 and 1401, that multiplied together give a palindrome (35799753).

The spelling of 255531401 in words is "two hundred fifty-five million, five hundred thirty-one thousand, four hundred one".