985052881 has 8 divisors (see below), whose sum is σ = 997506720. Its totient is φ = 972613152.

The previous prime is 985052833. The next prime is 985052897. The reversal of 985052881 is 188250589.

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

It is a 3-Lehmer number, since φ(985052881) divides (985052881-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 985052881 - 2¹³ = 985044689 is a prime.

It is a super-2 number, since 2×985052881² = 1940658356732800322, which contains 22 as substring.

It is a deceptive number, since it divides R_985052880.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985052821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243090 + ... + 247108.

It is an arithmetic number, because the mean of its divisors is an integer number (124688340).

It is a Poulet number, since it divides 2^985052880-1.

Almost surely, 2^985052881 is an apocalyptic number.

It is an amenable number.

985052881 is a deficient number, since it is larger than the sum of its proper divisors (12453839).

985052881 is a wasteful number, since it uses less digits than its factorization.

985052881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055.

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 985052881 is about 31385.5521060248. The cubic root of 985052881 is about 994.9925947447.

The spelling of 985052881 in words is "nine hundred eighty-five million, fifty-two thousand, eight hundred eighty-one".