51232130 has 16 divisors (see below), whose sum is σ = 93482424. Its totient is φ = 20211840.

The previous prime is 51232091. The next prime is 51232133. The reversal of 51232130 is 3123215.

51232130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40921609 + 10310521 = 6397^2 + 3211^2 .

It is a super-2 number, since 2×51232130² = 5249462288673800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51232099 and 51232108.

It is not an unprimeable number, because it can be changed into a prime (51232133) by changing a digit.

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, 34361 + ... + 35820.

Almost surely, 2^51232130 is an apocalyptic number.

51232130 is a deficient number, since it is larger than the sum of its proper divisors (42250294).

51232130 is a wasteful number, since it uses less digits than its factorization.

51232130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70261.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51232130 is about 7157.6623278833. The cubic root of 51232130 is about 371.4047645350.

Adding to 51232130 its reverse (3123215), we get a palindrome (54355345).

The spelling of 51232130 in words is "fifty-one million, two hundred thirty-two thousand, one hundred thirty".