51290329 has 16 divisors (see below), whose sum is σ = 55313280. Its totient is φ = 47416320.

The previous prime is 51290297. The next prime is 51290341. The reversal of 51290329 is 92309215.

It is a cyclic number.

It is not a de Polignac number, because 51290329 - 2⁵ = 51290297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51290329.

It is not an unprimeable number, because it can be changed into a prime (51290359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260259 + ... + 260455.

It is an arithmetic number, because the mean of its divisors is an integer number (3457080).

Almost surely, 2^51290329 is an apocalyptic number.

It is an amenable number.

51290329 is a deficient number, since it is larger than the sum of its proper divisors (4022951).

51290329 is a wasteful number, since it uses less digits than its factorization.

51290329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 51290329 is about 7161.7266772755. The cubic root of 51290329 is about 371.5453482281.

The spelling of 51290329 in words is "fifty-one million, two hundred ninety thousand, three hundred twenty-nine".