71161002 has 48 divisors (see below), whose sum is σ = 168929280. Its totient is φ = 21470400.

The previous prime is 71160989. The next prime is 71161003. The reversal of 71161002 is 20016117.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (71161003) 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, 54999 + ... + 56277.

It is an arithmetic number, because the mean of its divisors is an integer number (3519360).

Almost surely, 2^71161002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71161002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84464640).

71161002 is an abundant number, since it is smaller than the sum of its proper divisors (97768278).

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

71161002 is a wasteful number, since it uses less digits than its factorization.

71161002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 71161002 is about 8435.6980742556. The cubic root of 71161002 is about 414.3945339303.

Adding to 71161002 its reverse (20016117), we get a palindrome (91177119).

It can be divided in two parts, 7116 and 1002, that added together give a palindrome (8118).

The spelling of 71161002 in words is "seventy-one million, one hundred sixty-one thousand, two".