51160661 has 8 divisors (see below), whose sum is σ = 52647000. Its totient is φ = 49685760.

The previous prime is 51160651. The next prime is 51160679. The reversal of 51160661 is 16606115.

It can be written as a sum of positive squares in 4 ways, for example, as 1020100 + 50140561 = 1010^2 + 7081^2 .

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 51160661 - 2¹⁴ = 51144277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51160661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51160651) 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, 6665 + ... + 12113.

It is an arithmetic number, because the mean of its divisors is an integer number (6580875).

Almost surely, 2^51160661 is an apocalyptic number.

It is an amenable number.

51160661 is a deficient number, since it is larger than the sum of its proper divisors (1486339).

51160661 is a wasteful number, since it uses less digits than its factorization.

51160661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 51160661 is about 7152.6681035820. The cubic root of 51160661 is about 371.2319805181.

Adding to 51160661 its reverse (16606115), we get a palindrome (67766776).

The spelling of 51160661 in words is "fifty-one million, one hundred sixty thousand, six hundred sixty-one".