50897297521 has 8 divisors (see below), whose sum is σ = 58417991424. Its totient is φ = 43439016480.

The previous prime is 50897297513. The next prime is 50897297533. The reversal of 50897297521 is 12579279805.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50897297521 - 2³ = 50897297513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50897297551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15601465 + ... + 15604726.

It is an arithmetic number, because the mean of its divisors is an integer number (7302248928).

Almost surely, 2^50897297521 is an apocalyptic number.

It is an amenable number.

50897297521 is a deficient number, since it is larger than the sum of its proper divisors (7520693903).

50897297521 is a wasteful number, since it uses less digits than its factorization.

50897297521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31206431.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 50897297521 in words is "fifty billion, eight hundred ninety-seven million, two hundred ninety-seven thousand, five hundred twenty-one".