51818027 has 2 divisors, whose sum is σ = 51818028. Its totient is φ = 51818026.

The previous prime is 51818009. The next prime is 51818029. The reversal of 51818027 is 72081815.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51818027 is a prime.

Together with 51818029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51817984 and 51818002.

It is not a weakly prime, because it can be changed into another prime (51818029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25909013 + 25909014.

It is an arithmetic number, because the mean of its divisors is an integer number (25909014).

Almost surely, 2^51818027 is an apocalyptic number.

51818027 is a deficient number, since it is larger than the sum of its proper divisors (1).

51818027 is an equidigital number, since it uses as much as digits as its factorization.

51818027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 51818027 is about 7198.4739354949. The cubic root of 51818027 is about 372.8152117727.

The spelling of 51818027 in words is "fifty-one million, eight hundred eighteen thousand, twenty-seven".