51192101 has 2 divisors, whose sum is σ = 51192102. Its totient is φ = 51192100.

The previous prime is 51192019. The next prime is 51192109. The reversal of 51192101 is 10129115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47251876 + 3940225 = 6874^2 + 1985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51192101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51192109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25596050 + 25596051.

It is an arithmetic number, because the mean of its divisors is an integer number (25596051).

Almost surely, 2^51192101 is an apocalyptic number.

It is an amenable number.

51192101 is a deficient number, since it is larger than the sum of its proper divisors (1).

51192101 is an equidigital number, since it uses as much as digits as its factorization.

51192101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 51192101 is about 7154.8655473042. The cubic root of 51192101 is about 371.3080099204.

The spelling of 51192101 in words is "fifty-one million, one hundred ninety-two thousand, one hundred one".