51203959 has 2 divisors, whose sum is σ = 51203960. Its totient is φ = 51203958.

The previous prime is 51203953. The next prime is 51203969. The reversal of 51203959 is 95930215.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51203959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51203953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25601979 + 25601980.

It is an arithmetic number, because the mean of its divisors is an integer number (25601980).

Almost surely, 2^51203959 is an apocalyptic number.

51203959 is a deficient number, since it is larger than the sum of its proper divisors (1).

51203959 is an equidigital number, since it uses as much as digits as its factorization.

51203959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 51203959 is about 7155.6941661868. The cubic root of 51203959 is about 371.3366773018.

The spelling of 51203959 in words is "fifty-one million, two hundred three thousand, nine hundred fifty-nine".