51634339 has 2 divisors, whose sum is σ = 51634340. Its totient is φ = 51634338.

The previous prime is 51634337. The next prime is 51634391. The reversal of 51634339 is 93343615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51634339 - 2¹ = 51634337 is a prime.

It is a super-2 number, since 2×51634339² = 5332209927933842, which contains 22 as substring.

Together with 51634337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51634337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25817169 + 25817170.

It is an arithmetic number, because the mean of its divisors is an integer number (25817170).

Almost surely, 2^51634339 is an apocalyptic number.

51634339 is a deficient number, since it is larger than the sum of its proper divisors (1).

51634339 is an equidigital number, since it uses as much as digits as its factorization.

51634339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 34.

The square root of 51634339 is about 7185.7037929489. The cubic root of 51634339 is about 372.3741634619.

The spelling of 51634339 in words is "fifty-one million, six hundred thirty-four thousand, three hundred thirty-nine".