71161051 has 8 divisors (see below), whose sum is σ = 76703760. Its totient is φ = 65628192.

The previous prime is 71161037. The next prime is 71161081. The reversal of 71161051 is 15016117.

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

It is a cyclic number.

It is not a de Polignac number, because 71161051 - 2⁵ = 71161019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71161081) 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, 20616 + ... + 23818.

It is an arithmetic number, because the mean of its divisors is an integer number (9587970).

Almost surely, 2^71161051 is an apocalyptic number.

71161051 is a deficient number, since it is larger than the sum of its proper divisors (5542709).

71161051 is a wasteful number, since it uses less digits than its factorization.

71161051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 71161051 is about 8435.7009785791. The cubic root of 71161051 is about 414.3946290448.

Adding to 71161051 its reverse (15016117), we get a palindrome (86177168).

The spelling of 71161051 in words is "seventy-one million, one hundred sixty-one thousand, fifty-one".