50512521513551 has 4 divisors (see below), whose sum is σ = 50562583478400. Its totient is φ = 50462459548704.

The previous prime is 50512521513523. The next prime is 50512521513569. The reversal of 50512521513551 is 15531512521505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50512521513551 is a prime.

It is a super-4 number, since 4×50512521513551⁴ (a number of 56 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50512521513499 and 50512521513508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50512521513451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25030980911 + ... + 25030982928.

It is an arithmetic number, because the mean of its divisors is an integer number (12640645869600).

Almost surely, 2^{50512521513551} is an apocalyptic number.

50512521513551 is a deficient number, since it is larger than the sum of its proper divisors (50061964849).

50512521513551 is a wasteful number, since it uses less digits than its factorization.

50512521513551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50061964848.

The product of its (nonzero) digits is 187500, while the sum is 41.

The spelling of 50512521513551 in words is "fifty trillion, five hundred twelve billion, five hundred twenty-one million, five hundred thirteen thousand, five hundred fifty-one".