51899377 has 2 divisors, whose sum is σ = 51899378. Its totient is φ = 51899376.

The previous prime is 51899347. The next prime is 51899381. The reversal of 51899377 is 77399815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34999056 + 16900321 = 5916^2 + 4111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51899377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51899377.

It is not a weakly prime, because it can be changed into another prime (51899347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25949688 + 25949689.

It is an arithmetic number, because the mean of its divisors is an integer number (25949689).

Almost surely, 2^51899377 is an apocalyptic number.

It is an amenable number.

51899377 is a deficient number, since it is larger than the sum of its proper divisors (1).

51899377 is an equidigital number, since it uses as much as digits as its factorization.

51899377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 51899377 is about 7204.1222227278. The cubic root of 51899377 is about 373.0102060760.

The spelling of 51899377 in words is "fifty-one million, eight hundred ninety-nine thousand, three hundred seventy-seven".