51504529 has 2 divisors, whose sum is σ = 51504530. Its totient is φ = 51504528.

The previous prime is 51504511. The next prime is 51504553. The reversal of 51504529 is 92540515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 22344529 = 5400^2 + 4727^2 .

It is a cyclic number.

It is not a de Polignac number, because 51504529 - 2¹⁷ = 51373457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51504529.

It is not a weakly prime, because it can be changed into another prime (51504589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752264 + 25752265.

It is an arithmetic number, because the mean of its divisors is an integer number (25752265).

Almost surely, 2^51504529 is an apocalyptic number.

It is an amenable number.

51504529 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504529 is an equidigital number, since it uses as much as digits as its factorization.

51504529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 51504529 is about 7176.6655906486. The cubic root of 51504529 is about 372.0618489872.

The spelling of 51504529 in words is "fifty-one million, five hundred four thousand, five hundred twenty-nine".