1255533 has 4 divisors (see below), whose sum is σ = 1674048. Its totient is φ = 837020.

The previous prime is 1255519. The next prime is 1255549. The reversal of 1255533 is 3355521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1255533 - 2⁹ = 1255021 is a prime.

It is a super-2 number, since 2×1255533² = 3152726228178, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255333) 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, 209253 + ... + 209258.

It is an arithmetic number, because the mean of its divisors is an integer number (418512).

2^1255533 is an apocalyptic number.

It is an amenable number.

1255533 is a deficient number, since it is larger than the sum of its proper divisors (418515).

1255533 is an equidigital number, since it uses as much as digits as its factorization.

1255533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418514.

The product of its digits is 2250, while the sum is 24.

The square root of 1255533 is about 1120.5056894099. The cubic root of 1255533 is about 107.8804403947.

The spelling of 1255533 in words is "one million, two hundred fifty-five thousand, five hundred thirty-three".