51338715 has 16 divisors (see below), whose sum is σ = 83693088. Its totient is φ = 26863616.

The previous prime is 51338713. The next prime is 51338717. The reversal of 51338715 is 51783315.

It is an interprime number because it is at equal distance from previous prime (51338713) and next prime (51338717).

It is a cyclic number.

It is not a de Polignac number, because 51338715 - 2¹ = 51338713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51338713) 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 in 15 ways as a sum of consecutive naturals, for example, 31494 + ... + 33083.

It is an arithmetic number, because the mean of its divisors is an integer number (5230818).

Almost surely, 2^51338715 is an apocalyptic number.

51338715 is a deficient number, since it is larger than the sum of its proper divisors (32354373).

51338715 is a wasteful number, since it uses less digits than its factorization.

51338715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64638.

The product of its digits is 12600, while the sum is 33.

The square root of 51338715 is about 7165.1039769148. The cubic root of 51338715 is about 371.6621470043.

The spelling of 51338715 in words is "fifty-one million, three hundred thirty-eight thousand, seven hundred fifteen".