255115501 has 2 divisors, whose sum is σ = 255115502. Its totient is φ = 255115500.

The previous prime is 255115493. The next prime is 255115507. The reversal of 255115501 is 105511552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232562500 + 22553001 = 15250^2 + 4749^2 .

It is a cyclic number.

It is not a de Polignac number, because 255115501 - 2³ = 255115493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255115507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127557750 + 127557751.

It is an arithmetic number, because the mean of its divisors is an integer number (127557751).

Almost surely, 2^255115501 is an apocalyptic number.

It is an amenable number.

255115501 is a deficient number, since it is larger than the sum of its proper divisors (1).

255115501 is an equidigital number, since it uses as much as digits as its factorization.

255115501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 255115501 is about 15972.3354898399. The cubic root of 255115501 is about 634.2282984999.

The spelling of 255115501 in words is "two hundred fifty-five million, one hundred fifteen thousand, five hundred one".