51572047 has 2 divisors, whose sum is σ = 51572048. Its totient is φ = 51572046.

The previous prime is 51572041. The next prime is 51572051. The reversal of 51572047 is 74027515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51572047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51572041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25786023 + 25786024.

It is an arithmetic number, because the mean of its divisors is an integer number (25786024).

Almost surely, 2^51572047 is an apocalyptic number.

51572047 is a deficient number, since it is larger than the sum of its proper divisors (1).

51572047 is an equidigital number, since it uses as much as digits as its factorization.

51572047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 51572047 is about 7181.3680451569. The cubic root of 51572047 is about 372.2243583386.

The spelling of 51572047 in words is "fifty-one million, five hundred seventy-two thousand, forty-seven".