51612726 has 16 divisors (see below), whose sum is σ = 112609728. Its totient is φ = 15640200.

The previous prime is 51612719. The next prime is 51612733. The reversal of 51612726 is 62721615.

It is an interprime number because it is at equal distance from previous prime (51612719) and next prime (51612733).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51612693 and 51612702.

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, 390940 + ... + 391071.

It is an arithmetic number, because the mean of its divisors is an integer number (7038108).

Almost surely, 2^51612726 is an apocalyptic number.

51612726 is an abundant number, since it is smaller than the sum of its proper divisors (60997002).

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

51612726 is a wasteful number, since it uses less digits than its factorization.

51612726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782027.

The product of its digits is 5040, while the sum is 30.

The square root of 51612726 is about 7184.1997466663. The cubic root of 51612726 is about 372.3222003295.

Subtracting 51612726 from its reverse (62721615), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 5161 and 2726, that added together give a palindrome (7887).

The spelling of 51612726 in words is "fifty-one million, six hundred twelve thousand, seven hundred twenty-six".