51973319 has 2 divisors, whose sum is σ = 51973320. Its totient is φ = 51973318.

The previous prime is 51973297. The next prime is 51973321. The reversal of 51973319 is 91337915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51973319 - 2¹² = 51969223 is a prime.

It is a super-2 number, since 2×51973319² = 5402451775751522, which contains 22 as substring.

Together with 51973321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51973619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25986659 + 25986660.

It is an arithmetic number, because the mean of its divisors is an integer number (25986660).

Almost surely, 2^51973319 is an apocalyptic number.

51973319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51973319 is an equidigital number, since it uses as much as digits as its factorization.

51973319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 38.

The square root of 51973319 is about 7209.2523190689. The cubic root of 51973319 is about 373.1872668563.

The spelling of 51973319 in words is "fifty-one million, nine hundred seventy-three thousand, three hundred nineteen".