51463739 has 2 divisors, whose sum is σ = 51463740. Its totient is φ = 51463738.

The previous prime is 51463691. The next prime is 51463747. The reversal of 51463739 is 93736415.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51463739 - 2⁸ = 51463483 is a prime.

It is a super-4 number, since 4×51463739⁴ (a number of 32 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51463339) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25731869 + 25731870.

It is an arithmetic number, because the mean of its divisors is an integer number (25731870).

Almost surely, 2^51463739 is an apocalyptic number.

51463739 is a deficient number, since it is larger than the sum of its proper divisors (1).

51463739 is an equidigital number, since it uses as much as digits as its factorization.

51463739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 38.

The square root of 51463739 is about 7173.8231787520. The cubic root of 51463739 is about 371.9636025398.

The spelling of 51463739 in words is "fifty-one million, four hundred sixty-three thousand, seven hundred thirty-nine".