1205551033 has 16 divisors (see below), whose sum is σ = 1271401984. Its totient is φ = 1141620480.

The previous prime is 1205551027. The next prime is 1205551051. The reversal of 1205551033 is 3301555021.

It is a cyclic number.

It is not a de Polignac number, because 1205551033 - 2⁵ = 1205551001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1205550989 and 1205551007.

It is not an unprimeable number, because it can be changed into a prime (1205551433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324241 + ... + 327937.

It is an arithmetic number, because the mean of its divisors is an integer number (79462624).

Almost surely, 2^1205551033 is an apocalyptic number.

It is an amenable number.

1205551033 is a deficient number, since it is larger than the sum of its proper divisors (65850951).

1205551033 is a wasteful number, since it uses less digits than its factorization.

1205551033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1205551033 is about 34721.0459663876. The cubic root of 1205551033 is about 1064.2946192747.

The spelling of 1205551033 in words is "one billion, two hundred five million, five hundred fifty-one thousand, thirty-three".