51528726 has 24 divisors (see below), whose sum is σ = 112529664. Its totient is φ = 17040240.

The previous prime is 51528721. The next prime is 51528731. The reversal of 51528726 is 62782515.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51528721) and next prime (51528731).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51528721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8985 + ... + 13556.

It is an arithmetic number, because the mean of its divisors is an integer number (4688736).

Almost surely, 2^51528726 is an apocalyptic number.

51528726 is an abundant number, since it is smaller than the sum of its proper divisors (61000938).

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

51528726 is a wasteful number, since it uses less digits than its factorization.

51528726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22676 (or 22673 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 51528726 is about 7178.3512034450. The cubic root of 51528726 is about 372.1201051655.

It can be divided in two parts, 515 and 28726, that added together give a square (29241 = 171²).

The spelling of 51528726 in words is "fifty-one million, five hundred twenty-eight thousand, seven hundred twenty-six".