51148039 has 2 divisors, whose sum is σ = 51148040. Its totient is φ = 51148038.

The previous prime is 51148037. The next prime is 51148051. The reversal of 51148039 is 93084115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51148039 - 2¹ = 51148037 is a prime.

It is a super-2 number, since 2×51148039² = 5232243787091042, which contains 22 as substring.

Together with 51148037, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51148039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51148037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25574019 + 25574020.

It is an arithmetic number, because the mean of its divisors is an integer number (25574020).

Almost surely, 2^51148039 is an apocalyptic number.

51148039 is a deficient number, since it is larger than the sum of its proper divisors (1).

51148039 is an equidigital number, since it uses as much as digits as its factorization.

51148039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 51148039 is about 7151.7857210630. The cubic root of 51148039 is about 371.2014487556.

The spelling of 51148039 in words is "fifty-one million, one hundred forty-eight thousand, thirty-nine".