51399706 has 8 divisors (see below), whose sum is σ = 78892704. Its totient is φ = 25102140.

The previous prime is 51399703. The next prime is 51399709. The reversal of 51399706 is 60799315.

It is an interprime number because it is at equal distance from previous prime (51399703) and next prime (51399709).

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

It is not an unprimeable number, because it can be changed into a prime (51399703) 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, 298750 + ... + 298921.

It is an arithmetic number, because the mean of its divisors is an integer number (9861588).

Almost surely, 2^51399706 is an apocalyptic number.

51399706 is a deficient number, since it is larger than the sum of its proper divisors (27492998).

51399706 is a wasteful number, since it uses less digits than its factorization.

51399706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597716.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 51399706 is about 7169.3588276777. The cubic root of 51399706 is about 371.8092684330.

The spelling of 51399706 in words is "fifty-one million, three hundred ninety-nine thousand, seven hundred six".