855465961 has 12 divisors (see below), whose sum is σ = 996106692. Its totient is φ = 732539808.

The previous prime is 855465913. The next prime is 855465967. The reversal of 855465961 is 169564558.

It can be written as a sum of positive squares in 2 ways, for example, as 768398400 + 87067561 = 27720^2 + 9331^2 .

It is not a de Polignac number, because 855465961 - 2⁷ = 855465833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (855465967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45571 + ... + 61543.

It is an arithmetic number, because the mean of its divisors is an integer number (83008891).

Almost surely, 2^855465961 is an apocalyptic number.

It is an amenable number.

855465961 is a deficient number, since it is larger than the sum of its proper divisors (140640731).

855465961 is a wasteful number, since it uses less digits than its factorization.

855465961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17080 (or 17073 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 49.

The square root of 855465961 is about 29248.3497141292. The cubic root of 855465961 is about 949.2943831395.

The spelling of 855465961 in words is "eight hundred fifty-five million, four hundred sixty-five thousand, nine hundred sixty-one".