51539027 has 2 divisors, whose sum is σ = 51539028. Its totient is φ = 51539026.

The previous prime is 51538997. The next prime is 51539029. The reversal of 51539027 is 72093515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51539027 is a prime.

Together with 51539029, 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 = 51538984 and 51539002.

It is not a weakly prime, because it can be changed into another prime (51539029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25769513 + 25769514.

It is an arithmetic number, because the mean of its divisors is an integer number (25769514).

Almost surely, 2^51539027 is an apocalyptic number.

51539027 is a deficient number, since it is larger than the sum of its proper divisors (1).

51539027 is an equidigital number, since it uses as much as digits as its factorization.

51539027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 51539027 is about 7179.0686721886. The cubic root of 51539027 is about 372.1449000977.

The spelling of 51539027 in words is "fifty-one million, five hundred thirty-nine thousand, twenty-seven".