51860947 has 2 divisors, whose sum is σ = 51860948. Its totient is φ = 51860946.

The previous prime is 51860933. The next prime is 51860951. The reversal of 51860947 is 74906815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51860947 - 2⁷ = 51860819 is a prime.

It is not a weakly prime, because it can be changed into another prime (51860917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25930473 + 25930474.

It is an arithmetic number, because the mean of its divisors is an integer number (25930474).

Almost surely, 2^51860947 is an apocalyptic number.

51860947 is a deficient number, since it is larger than the sum of its proper divisors (1).

51860947 is an equidigital number, since it uses as much as digits as its factorization.

51860947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 51860947 is about 7201.4545058620. The cubic root of 51860947 is about 372.9181155560.

The spelling of 51860947 in words is "fifty-one million, eight hundred sixty thousand, nine hundred forty-seven".