51480826 has 4 divisors (see below), whose sum is σ = 77221242. Its totient is φ = 25740412.

The previous prime is 51480817. The next prime is 51480827. The reversal of 51480826 is 62808415.

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

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 4626801 = 6845^2 + 2151^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51480791 and 51480800.

It is not an unprimeable number, because it can be changed into a prime (51480827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12870205 + ... + 12870208.

Almost surely, 2^51480826 is an apocalyptic number.

51480826 is a deficient number, since it is larger than the sum of its proper divisors (25740416).

51480826 is a wasteful number, since it uses less digits than its factorization.

51480826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25740415.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 51480826 is about 7175.0140069550. The cubic root of 51480826 is about 372.0047644590.

The spelling of 51480826 in words is "fifty-one million, four hundred eighty thousand, eight hundred twenty-six".