51446530 has 8 divisors (see below), whose sum is σ = 92603772. Its totient is φ = 20578608.

The previous prime is 51446501. The next prime is 51446537. The reversal of 51446530 is 3564415.

It can be written as a sum of positive squares in 2 ways, for example, as 49294441 + 2152089 = 7021^2 + 1467^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51446537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572317 + ... + 2572336.

Almost surely, 2^51446530 is an apocalyptic number.

51446530 is a deficient number, since it is larger than the sum of its proper divisors (41157242).

51446530 is a wasteful number, since it uses less digits than its factorization.

51446530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5144660.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 51446530 is about 7172.6236482894. The cubic root of 51446530 is about 371.9221375175.

The spelling of 51446530 in words is "fifty-one million, four hundred forty-six thousand, five hundred thirty".