51692197 has 2 divisors, whose sum is σ = 51692198. Its totient is φ = 51692196.

The previous prime is 51692191. The next prime is 51692203. The reversal of 51692197 is 79129615.

It is a balanced prime because it is at equal distance from previous prime (51692191) and next prime (51692203).

It can be written as a sum of positive squares in only one way, i.e., 50680161 + 1012036 = 7119^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 51692197 - 2¹⁵ = 51659429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51692191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25846098 + 25846099.

It is an arithmetic number, because the mean of its divisors is an integer number (25846099).

Almost surely, 2^51692197 is an apocalyptic number.

It is an amenable number.

51692197 is a deficient number, since it is larger than the sum of its proper divisors (1).

51692197 is an equidigital number, since it uses as much as digits as its factorization.

51692197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 51692197 is about 7189.7285762399. The cubic root of 51692197 is about 372.5131974364.

The spelling of 51692197 in words is "fifty-one million, six hundred ninety-two thousand, one hundred ninety-seven".