83123550 has 96 divisors (see below), whose sum is σ = 232723200. Its totient is φ = 21811680.

The previous prime is 83123549. The next prime is 83123569. The reversal of 83123550 is 5532138.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89991 + ... + 90909.

It is an arithmetic number, because the mean of its divisors is an integer number (2424200).

Almost surely, 2^83123550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83123550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116361600).

83123550 is an abundant number, since it is smaller than the sum of its proper divisors (149599650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83123550 is a wasteful number, since it uses less digits than its factorization.

83123550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 83123550 is about 9117.2117448264. The cubic root of 83123550 is about 436.4233991301.

Adding to 83123550 its reverse (5532138), we get a palindrome (88655688).

The spelling of 83123550 in words is "eighty-three million, one hundred twenty-three thousand, five hundred fifty".