51017867 has 8 divisors (see below), whose sum is σ = 54180000. Its totient is φ = 47873664.

The previous prime is 51017861. The next prime is 51017881. The reversal of 51017867 is 76871015.

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

It is a cyclic number.

It is not a de Polignac number, because 51017867 - 2⁴ = 51017851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51017861) 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, 1634 + ... + 10232.

It is an arithmetic number, because the mean of its divisors is an integer number (6772500).

Almost surely, 2^51017867 is an apocalyptic number.

51017867 is a deficient number, since it is larger than the sum of its proper divisors (3162133).

51017867 is a wasteful number, since it uses less digits than its factorization.

51017867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8965.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 51017867 is about 7142.6792592136. The cubic root of 51017867 is about 370.8862780891.

The spelling of 51017867 in words is "fifty-one million, seventeen thousand, eight hundred sixty-seven".