51669367 has 2 divisors, whose sum is σ = 51669368. Its totient is φ = 51669366.

The previous prime is 51669349. The next prime is 51669383. The reversal of 51669367 is 76396615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51669367 - 2¹⁹ = 51145079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51669067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25834683 + 25834684.

It is an arithmetic number, because the mean of its divisors is an integer number (25834684).

Almost surely, 2^51669367 is an apocalyptic number.

51669367 is a deficient number, since it is larger than the sum of its proper divisors (1).

51669367 is an equidigital number, since it uses as much as digits as its factorization.

51669367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 51669367 is about 7188.1407192681. The cubic root of 51669367 is about 372.4583488706.

The spelling of 51669367 in words is "fifty-one million, six hundred sixty-nine thousand, three hundred sixty-seven".