51601071 has 8 divisors (see below), whose sum is σ = 69444864. Its totient is φ = 34079000.

The previous prime is 51601061. The next prime is 51601087. The reversal of 51601071 is 17010615.

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 51601071 - 2⁶ = 51601007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601021) 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, 80055 + ... + 80696.

It is an arithmetic number, because the mean of its divisors is an integer number (8680608).

Almost surely, 2^51601071 is an apocalyptic number.

51601071 is a deficient number, since it is larger than the sum of its proper divisors (17843793).

51601071 is a wasteful number, since it uses less digits than its factorization.

51601071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160861.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 51601071 is about 7183.3885458048. The cubic root of 51601071 is about 372.2941727333.

Adding to 51601071 its reverse (17010615), we get a palindrome (68611686).

The spelling of 51601071 in words is "fifty-one million, six hundred one thousand, seventy-one".