57550050021 has 4 divisors (see below), whose sum is σ = 76733400032. Its totient is φ = 38366700012.

The previous prime is 57550050013. The next prime is 57550050073. The reversal of 57550050021 is 12005005575.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57550050021 - 2³ = 57550050013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57550050091) 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, 9591675001 + ... + 9591675006.

It is an arithmetic number, because the mean of its divisors is an integer number (19183350008).

Almost surely, 2^57550050021 is an apocalyptic number.

It is an amenable number.

57550050021 is a deficient number, since it is larger than the sum of its proper divisors (19183350011).

57550050021 is a wasteful number, since it uses less digits than its factorization.

57550050021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19183350010.

The product of its (nonzero) digits is 8750, while the sum is 30.

Adding to 57550050021 its reverse (12005005575), we get a palindrome (69555055596).

It can be divided in two parts, 575500 and 50021, that added together give a triangular number (625521 = T₁₁₁₈).

The spelling of 57550050021 in words is "fifty-seven billion, five hundred fifty million, fifty thousand, twenty-one".