51238726 has 32 divisors (see below), whose sum is σ = 96219648. Its totient is φ = 19880640.

The previous prime is 51238723. The next prime is 51238729. The reversal of 51238726 is 62783215.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51238723) and next prime (51238729).

It is a junction number, because it is equal to n+sod(n) for n = 51238691 and 51238700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51238723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47671 + ... + 48733.

It is an arithmetic number, because the mean of its divisors is an integer number (3006864).

Almost surely, 2^51238726 is an apocalyptic number.

51238726 is a deficient number, since it is larger than the sum of its proper divisors (44980922).

51238726 is a wasteful number, since it uses less digits than its factorization.

51238726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396.

The product of its digits is 20160, while the sum is 34.

The square root of 51238726 is about 7158.1230780142. The cubic root of 51238726 is about 371.4207029750.

The spelling of 51238726 in words is "fifty-one million, two hundred thirty-eight thousand, seven hundred twenty-six".