855281497 has 4 divisors (see below), whose sum is σ = 977464576. Its totient is φ = 733098420.

The previous prime is 855281459. The next prime is 855281501. The reversal of 855281497 is 794182558.

It is a happy number.

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 855281497 - 2¹⁹ = 854757209 is a prime.

It is a super-2 number, since 2×855281497² = 1463012878221122018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 855281497.

It is not an unprimeable number, because it can be changed into a prime (855281437) 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, 61091529 + ... + 61091542.

It is an arithmetic number, because the mean of its divisors is an integer number (244366144).

Almost surely, 2^855281497 is an apocalyptic number.

It is an amenable number.

855281497 is a deficient number, since it is larger than the sum of its proper divisors (122183079).

855281497 is a wasteful number, since it uses less digits than its factorization.

855281497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122183078.

The product of its digits is 806400, while the sum is 49.

The square root of 855281497 is about 29245.1961354339. The cubic root of 855281497 is about 949.2261461650.

It can be divided in two parts, 85528 and 1497, that added together give a square (87025 = 295²).

The spelling of 855281497 in words is "eight hundred fifty-five million, two hundred eighty-one thousand, four hundred ninety-seven".