1255011 has 4 divisors (see below), whose sum is σ = 1673352. Its totient is φ = 836672.

The previous prime is 1254997. The next prime is 1255013. The reversal of 1255011 is 1105521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1105521 = 3 ⋅368507.

It is a cyclic number.

It is not a de Polignac number, because 1255011 - 2¹¹ = 1252963 is a prime.

It is a super-2 number, since 2×1255011² = 3150105220242, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1255013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209166 + ... + 209171.

It is an arithmetic number, because the mean of its divisors is an integer number (418338).

2^1255011 is an apocalyptic number.

1255011 is a deficient number, since it is larger than the sum of its proper divisors (418341).

1255011 is an equidigital number, since it uses as much as digits as its factorization.

1255011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418340.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1255011 is about 1120.2727346499. The cubic root of 1255011 is about 107.8654875431.

It can be divided in two parts, 12550 and 11, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 1255011 in words is "one million, two hundred fifty-five thousand, eleven".