992517855 has 64 divisors (see below), whose sum is σ = 1899552768. Its totient is φ = 432967680.

The previous prime is 992517853. The next prime is 992517857. The reversal of 992517855 is 558715299.

It is an interprime number because it is at equal distance from previous prime (992517853) and next prime (992517857).

It is not a de Polignac number, because 992517855 - 2¹ = 992517853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 992517798 and 992517807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992517853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 235527 + ... + 239703.

It is an arithmetic number, because the mean of its divisors is an integer number (29680512).

Almost surely, 2^992517855 is an apocalyptic number.

992517855 is a deficient number, since it is larger than the sum of its proper divisors (907034913).

992517855 is a wasteful number, since it uses less digits than its factorization.

992517855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296.

The product of its digits is 1134000, while the sum is 51.

The square root of 992517855 is about 31504.2513797741. The cubic root of 992517855 is about 997.4997054038.

The spelling of 992517855 in words is "nine hundred ninety-two million, five hundred seventeen thousand, eight hundred fifty-five".