51115706 has 8 divisors (see below), whose sum is σ = 80007264. Its totient is φ = 24446620.

The previous prime is 51115703. The next prime is 51115709. The reversal of 51115706 is 60751115.

It is an interprime number because it is at equal distance from previous prime (51115703) and next prime (51115709).

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

It is a super-2 number, since 2×51115706² = 5225630799756872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51115703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555560 + ... + 555651.

It is an arithmetic number, because the mean of its divisors is an integer number (10000908).

Almost surely, 2^51115706 is an apocalyptic number.

51115706 is a deficient number, since it is larger than the sum of its proper divisors (28891558).

51115706 is a wasteful number, since it uses less digits than its factorization.

51115706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111236.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 51115706 is about 7149.5248793189. The cubic root of 51115706 is about 371.1232144995.

The spelling of 51115706 in words is "fifty-one million, one hundred fifteen thousand, seven hundred six".