51736189 has 2 divisors, whose sum is σ = 51736190. Its totient is φ = 51736188.

The previous prime is 51736147. The next prime is 51736199. The reversal of 51736189 is 98163715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39275289 + 12460900 = 6267^2 + 3530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51736189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51736199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25868094 + 25868095.

It is an arithmetic number, because the mean of its divisors is an integer number (25868095).

Almost surely, 2^51736189 is an apocalyptic number.

It is an amenable number.

51736189 is a deficient number, since it is larger than the sum of its proper divisors (1).

51736189 is an equidigital number, since it uses as much as digits as its factorization.

51736189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 51736189 is about 7192.7872900566. The cubic root of 51736189 is about 372.6188417110.

The spelling of 51736189 in words is "fifty-one million, seven hundred thirty-six thousand, one hundred eighty-nine".