51183157 has 2 divisors, whose sum is σ = 51183158. Its totient is φ = 51183156.

The previous prime is 51183113. The next prime is 51183203. The reversal of 51183157 is 75138115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33802596 + 17380561 = 5814^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 51183157 - 2¹⁵ = 51150389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51183757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25591578 + 25591579.

It is an arithmetic number, because the mean of its divisors is an integer number (25591579).

Almost surely, 2^51183157 is an apocalyptic number.

It is an amenable number.

51183157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51183157 is an equidigital number, since it uses as much as digits as its factorization.

51183157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 31.

The square root of 51183157 is about 7154.2404907859. The cubic root of 51183157 is about 371.2863843687.

The spelling of 51183157 in words is "fifty-one million, one hundred eighty-three thousand, one hundred fifty-seven".