51356626 has 8 divisors (see below), whose sum is σ = 81566460. Its totient is φ = 24167808.

The previous prime is 51356623. The next prime is 51356633. The reversal of 51356626 is 62665315.

It can be written as a sum of positive squares in 2 ways, for example, as 49914225 + 1442401 = 7065^2 + 1201^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 1510489 = 51356626 / (5 + 1 + 3 + 5 + 6 + 6 + 2 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 51356591 and 51356600.

It is not an unprimeable number, because it can be changed into a prime (51356621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755211 + ... + 755278.

Almost surely, 2^51356626 is an apocalyptic number.

51356626 is a deficient number, since it is larger than the sum of its proper divisors (30209834).

51356626 is a wasteful number, since it uses less digits than its factorization.

51356626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510508.

The product of its digits is 32400, while the sum is 34.

The square root of 51356626 is about 7166.3537451064. The cubic root of 51356626 is about 371.7053636861.

The spelling of 51356626 in words is "fifty-one million, three hundred fifty-six thousand, six hundred twenty-six".