71282550 has 48 divisors (see below), whose sum is σ = 180559872. Its totient is φ = 18602400.

The previous prime is 71282527. The next prime is 71282567. The reversal of 71282550 is 5528217.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1995 + ... + 12105.

It is an arithmetic number, because the mean of its divisors is an integer number (3761664).

Almost surely, 2^71282550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71282550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90279936).

71282550 is an abundant number, since it is smaller than the sum of its proper divisors (109277322).

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

71282550 is a wasteful number, since it uses less digits than its factorization.

71282550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10173 (or 10168 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 71282550 is about 8442.8993835056. The cubic root of 71282550 is about 414.6303380681.

The spelling of 71282550 in words is "seventy-one million, two hundred eighty-two thousand, five hundred fifty".