51194089 has 8 divisors (see below), whose sum is σ = 54553608. Its totient is φ = 47873280.

The previous prime is 51194071. The next prime is 51194093. The reversal of 51194089 is 98049115.

It can be written as a sum of positive squares in 4 ways, for example, as 14953689 + 36240400 = 3867^2 + 6020^2 .

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 51194089 - 2⁵ = 51194057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51194489) 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, 6922 + ... + 12259.

It is an arithmetic number, because the mean of its divisors is an integer number (6819201).

Almost surely, 2^51194089 is an apocalyptic number.

It is an amenable number.

51194089 is a deficient number, since it is larger than the sum of its proper divisors (3359519).

51194089 is a wasteful number, since it uses less digits than its factorization.

51194089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19355.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 51194089 is about 7155.0044723955. The cubic root of 51194089 is about 371.3128163309.

The spelling of 51194089 in words is "fifty-one million, one hundred ninety-four thousand, eighty-nine".