51068815 has 8 divisors (see below), whose sum is σ = 70037280. Its totient is φ = 35018592.

The previous prime is 51068813. The next prime is 51068819. The reversal of 51068815 is 51886015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51068815 - 2¹ = 51068813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51068813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729520 + ... + 729589.

It is an arithmetic number, because the mean of its divisors is an integer number (8754660).

Almost surely, 2^51068815 is an apocalyptic number.

51068815 is a deficient number, since it is larger than the sum of its proper divisors (18968465).

51068815 is a wasteful number, since it uses less digits than its factorization.

51068815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459121.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 51068815 is about 7146.2448180845. The cubic root of 51068815 is about 371.0096964697.

The spelling of 51068815 in words is "fifty-one million, sixty-eight thousand, eight hundred fifteen".