255513407 has 2 divisors, whose sum is σ = 255513408. Its totient is φ = 255513406.

The previous prime is 255513389. The next prime is 255513431. The reversal of 255513407 is 704315552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255513407 - 2⁸ = 255513151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255513607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127756703 + 127756704.

It is an arithmetic number, because the mean of its divisors is an integer number (127756704).

Almost surely, 2^255513407 is an apocalyptic number.

255513407 is a deficient number, since it is larger than the sum of its proper divisors (1).

255513407 is an equidigital number, since it uses as much as digits as its factorization.

255513407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 255513407 is about 15984.7867361438. The cubic root of 255513407 is about 634.5578644592.

Adding to 255513407 its reverse (704315552), we get a palindrome (959828959).

The spelling of 255513407 in words is "two hundred fifty-five million, five hundred thirteen thousand, four hundred seven".