51667193 has 2 divisors, whose sum is σ = 51667194. Its totient is φ = 51667192.

The previous prime is 51667171. The next prime is 51667211. The reversal of 51667193 is 39176615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30063289 + 21603904 = 5483^2 + 4648^2 .

It is a cyclic number.

It is not a de Polignac number, because 51667193 - 2¹⁸ = 51405049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51667393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25833596 + 25833597.

It is an arithmetic number, because the mean of its divisors is an integer number (25833597).

Almost surely, 2^51667193 is an apocalyptic number.

It is an amenable number.

51667193 is a deficient number, since it is larger than the sum of its proper divisors (1).

51667193 is an equidigital number, since it uses as much as digits as its factorization.

51667193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 38.

The square root of 51667193 is about 7187.9894963752. The cubic root of 51667193 is about 372.4531250416.

The spelling of 51667193 in words is "fifty-one million, six hundred sixty-seven thousand, one hundred ninety-three".