855540077 has 8 divisors (see below), whose sum is σ = 1009300992. Its totient is φ = 709664400.

The previous prime is 855540043. The next prime is 855540089. The reversal of 855540077 is 770045558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 855540077 - 2¹⁰ = 855539053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855540017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1971074 + ... + 1971507.

It is an arithmetic number, because the mean of its divisors is an integer number (126162624).

Almost surely, 2^855540077 is an apocalyptic number.

It is an amenable number.

855540077 is a deficient number, since it is larger than the sum of its proper divisors (153760915).

855540077 is a wasteful number, since it uses less digits than its factorization.

855540077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942619.

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 855540077 is about 29249.6166983432. The cubic root of 855540077 is about 949.3217973885.

The spelling of 855540077 in words is "eight hundred fifty-five million, five hundred forty thousand, seventy-seven".