51823799 has 2 divisors, whose sum is σ = 51823800. Its totient is φ = 51823798.

The previous prime is 51823753. The next prime is 51823813. The reversal of 51823799 is 99732815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51823799 is a prime.

It is a super-2 number, since 2×51823799² = 5371412285584802, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51823699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25911899 + 25911900.

It is an arithmetic number, because the mean of its divisors is an integer number (25911900).

Almost surely, 2^51823799 is an apocalyptic number.

51823799 is a deficient number, since it is larger than the sum of its proper divisors (1).

51823799 is an equidigital number, since it uses as much as digits as its factorization.

51823799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The square root of 51823799 is about 7198.8748426403. The cubic root of 51823799 is about 372.8290538635.

The spelling of 51823799 in words is "fifty-one million, eight hundred twenty-three thousand, seven hundred ninety-nine".