855490133 has 16 divisors (see below), whose sum is σ = 932166144. Its totient is φ = 781923840.

The previous prime is 855490093. The next prime is 855490151. The reversal of 855490133 is 331094558.

It is a happy number.

It is not a de Polignac number, because 855490133 - 2¹⁶ = 855424597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855420133) 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, 155516 + ... + 160922.

It is an arithmetic number, because the mean of its divisors is an integer number (58260384).

Almost surely, 2^855490133 is an apocalyptic number.

It is an amenable number.

855490133 is a deficient number, since it is larger than the sum of its proper divisors (76676011).

855490133 is a wasteful number, since it uses less digits than its factorization.

855490133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 855490133 is about 29248.7629311053. The cubic root of 855490133 is about 949.3033241255.

The spelling of 855490133 in words is "eight hundred fifty-five million, four hundred ninety thousand, one hundred thirty-three".