53021429217 has 36 divisors (see below), whose sum is σ = 81532681776.
Its totient is φ = 33196348800.
The previous prime is 53021429207. The next prime is 53021429221. The reversal of 53021429217 is 71292412035.
53021429217 is a `hidden beast` number, since 530 + 21 + 4 + 2 + 92 + 17 = 666.
It is not a de Polignac number, because 53021429217 - 28 = 53021428961 is a prime.
It is a super-2 number, since 2×530214292172 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (53021429207) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1192842 + ... + 1236492.
It is an arithmetic number, because the mean of its divisors is an integer number (2264796716).
Almost surely, 253021429217 is an apocalyptic number.
It is an amenable number.
53021429217 is a deficient number, since it is larger than the sum of its proper divisors (28511252559).
53021429217 is a wasteful number, since it uses less digits than its factorization.
53021429217 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44158 (or 44138 counting only the distinct ones).
The product of its (nonzero) digits is 30240, while the sum is 36.
The spelling of 53021429217 in words is "fifty-three billion, twenty-one million, four hundred twenty-nine thousand, two hundred seventeen".