51605726 has 16 divisors (see below), whose sum is σ = 78279696. Its totient is φ = 25514496.

The previous prime is 51605699. The next prime is 51605753. The reversal of 51605726 is 62750615.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51605699) and next prime (51605753).

It is a junction number, because it is equal to n+sod(n) for n = 51605692 and 51605701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89150 + ... + 89726.

It is an arithmetic number, because the mean of its divisors is an integer number (4892481).

Almost surely, 2^51605726 is an apocalyptic number.

51605726 is a deficient number, since it is larger than the sum of its proper divisors (26673970).

51605726 is a wasteful number, since it uses less digits than its factorization.

51605726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 51605726 is about 7183.7125499285. The cubic root of 51605726 is about 372.3053674445.

The spelling of 51605726 in words is "fifty-one million, six hundred five thousand, seven hundred twenty-six".