255219403 has 2 divisors, whose sum is σ = 255219404. Its totient is φ = 255219402.

The previous prime is 255219347. The next prime is 255219407. The reversal of 255219403 is 304912552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255219403 - 2²¹ = 253122251 is a prime.

It is not a weakly prime, because it can be changed into another prime (255219407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127609701 + 127609702.

It is an arithmetic number, because the mean of its divisors is an integer number (127609702).

Almost surely, 2^255219403 is an apocalyptic number.

255219403 is a deficient number, since it is larger than the sum of its proper divisors (1).

255219403 is an equidigital number, since it uses as much as digits as its factorization.

255219403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 255219403 is about 15975.5877200183. The cubic root of 255219403 is about 634.3143884530.

The spelling of 255219403 in words is "two hundred fifty-five million, two hundred nineteen thousand, four hundred three".