1015255 has 4 divisors (see below), whose sum is σ = 1218312. Its totient is φ = 812200.

The previous prime is 1015207. The next prime is 1015277. The reversal of 1015255 is 5525101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1015255 - 2⁷ = 1015127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101521 + ... + 101530.

It is an arithmetic number, because the mean of its divisors is an integer number (304578).

2^1015255 is an apocalyptic number.

1015255 is a deficient number, since it is larger than the sum of its proper divisors (203057).

1015255 is an equidigital number, since it uses as much as digits as its factorization.

1015255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203056.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 1015255 is about 1007.5986304080. The cubic root of 1015255 is about 100.5059359711.

It can be divided in two parts, 101 and 5255, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 1015255 in words is "one million, fifteen thousand, two hundred fifty-five".