51006386 has 8 divisors (see below), whose sum is σ = 76561644. Its totient is φ = 25485840.

The previous prime is 51006323. The next prime is 51006391. The reversal of 51006386 is 68360015.

It can be written as a sum of positive squares in 2 ways, for example, as 50623225 + 383161 = 7115^2 + 619^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625 + ... + 11108.

Almost surely, 2^51006386 is an apocalyptic number.

51006386 is a deficient number, since it is larger than the sum of its proper divisors (25555258).

51006386 is a wasteful number, since it uses less digits than its factorization.

51006386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17356.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 51006386 is about 7141.8755239783. The cubic root of 51006386 is about 370.8584547332.

The spelling of 51006386 in words is "fifty-one million, six thousand, three hundred eighty-six".