83530881 has 24 divisors (see below), whose sum is σ = 138325824. Its totient is φ = 47581920.

The previous prime is 83530879. The next prime is 83530883. The reversal of 83530881 is 18803538.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (83530879) and next prime (83530883).

It is not a de Polignac number, because 83530881 - 2¹ = 83530879 is a prime.

It is a super-2 number, since 2×83530881² = 13954816161272322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83530883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19951 + ... + 23771.

It is an arithmetic number, because the mean of its divisors is an integer number (5763576).

Almost surely, 2^83530881 is an apocalyptic number.

It is an amenable number.

83530881 is a deficient number, since it is larger than the sum of its proper divisors (54794943).

83530881 is a wasteful number, since it uses less digits than its factorization.

83530881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181 (or 4178 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 83530881 is about 9139.5230181886. The cubic root of 83530881 is about 437.1351075593.

The spelling of 83530881 in words is "eighty-three million, five hundred thirty thousand, eight hundred eighty-one".