51430726 has 4 divisors (see below), whose sum is σ = 77146092. Its totient is φ = 25715362.

The previous prime is 51430693. The next prime is 51430781. The reversal of 51430726 is 62703415.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 51430694 and 51430703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12857680 + ... + 12857683.

It is an arithmetic number, because the mean of its divisors is an integer number (19286523).

Almost surely, 2^51430726 is an apocalyptic number.

51430726 is a deficient number, since it is larger than the sum of its proper divisors (25715366).

51430726 is a wasteful number, since it uses less digits than its factorization.

51430726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25715365.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 51430726 is about 7171.5218747488. The cubic root of 51430726 is about 371.8840496915.

The spelling of 51430726 in words is "fifty-one million, four hundred thirty thousand, seven hundred twenty-six".