51325530 has 16 divisors (see below), whose sum is σ = 123181344. Its totient is φ = 13686800.

The previous prime is 51325523. The next prime is 51325559. The reversal of 51325530 is 3552315.

51325530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51325530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855396 + ... + 855455.

It is an arithmetic number, because the mean of its divisors is an integer number (7698834).

Almost surely, 2^51325530 is an apocalyptic number.

51325530 is an abundant number, since it is smaller than the sum of its proper divisors (71855814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51325530 is a wasteful number, since it uses less digits than its factorization.

51325530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710861.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 51325530 is about 7164.1838334872. The cubic root of 51325530 is about 371.6303270612.

Adding to 51325530 its reverse (3552315), we get a palindrome (54877845).

The spelling of 51325530 in words is "fifty-one million, three hundred twenty-five thousand, five hundred thirty".