1255443533 has 2 divisors, whose sum is σ = 1255443534. Its totient is φ = 1255443532.

The previous prime is 1255443503. The next prime is 1255443547. The reversal of 1255443533 is 3353445521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1138522564 + 116920969 = 33742^2 + 10813^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255443533 - 2²⁰ = 1254394957 is a prime.

It is a super-2 number, since 2×1255443533² = 3152276929103044178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255443493 and 1255443502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255443503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627721766 + 627721767.

It is an arithmetic number, because the mean of its divisors is an integer number (627721767).

Almost surely, 2^1255443533 is an apocalyptic number.

It is an amenable number.

1255443533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255443533 is an equidigital number, since it uses as much as digits as its factorization.

1255443533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 35.

The square root of 1255443533 is about 35432.2386111857. The cubic root of 1255443533 is about 1078.7787787912.

The spelling of 1255443533 in words is "one billion, two hundred fifty-five million, four hundred forty-three thousand, five hundred thirty-three".