51430528 has 32 divisors (see below), whose sum is σ = 102803760. Its totient is φ = 25628928.

The previous prime is 51430517. The next prime is 51430529. The reversal of 51430528 is 82503415.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 51430496 and 51430505.

It is not an unprimeable number, because it can be changed into a prime (51430529) 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, 56251 + ... + 57157.

Almost surely, 2^51430528 is an apocalyptic number.

It is an amenable number.

51430528 is a deficient number, since it is larger than the sum of its proper divisors (51373232).

51430528 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 12 representation: 51430528 = (15283054)₁₂.

51430528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 51430528 is about 7171.5080701342. The cubic root of 51430528 is about 371.8835724597.

The spelling of 51430528 in words is "fifty-one million, four hundred thirty thousand, five hundred twenty-eight".