51530529 has 12 divisors (see below), whose sum is σ = 70620144. Its totient is φ = 33422544.

The previous prime is 51530473. The next prime is 51530533. The reversal of 51530529 is 92503515.

It is not a de Polignac number, because 51530529 - 2⁸ = 51530273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51530496 and 51530505.

It is not an unprimeable number, because it can be changed into a prime (51530579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2167 + ... + 10380.

It is an arithmetic number, because the mean of its divisors is an integer number (5885012).

Almost surely, 2^51530529 is an apocalyptic number.

It is an amenable number.

51530529 is a deficient number, since it is larger than the sum of its proper divisors (19089615).

51530529 is a wasteful number, since it uses less digits than its factorization.

51530529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624 (or 12587 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 51530529 is about 7178.4767882887. The cubic root of 51530529 is about 372.1244452995.

The spelling of 51530529 in words is "fifty-one million, five hundred thirty thousand, five hundred twenty-nine".