51725706 has 8 divisors (see below), whose sum is σ = 103451424. Its totient is φ = 17241900.

The previous prime is 51725677. The next prime is 51725711. The reversal of 51725706 is 60752715.

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

51725706 is an admirable number.

It is a super-2 number, since 2×51725706² = 5351097322396872, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4310470 + ... + 4310481.

It is an arithmetic number, because the mean of its divisors is an integer number (12931428).

Almost surely, 2^51725706 is an apocalyptic number.

51725706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51725706 is a wasteful number, since it uses less digits than its factorization.

51725706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8620956.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 51725706 is about 7192.0585370254. The cubic root of 51725706 is about 372.5936728221.

It can be divided in two parts, 5172 and 5706, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 51725706 in words is "fifty-one million, seven hundred twenty-five thousand, seven hundred six".