5550321521 has 4 divisors (see below), whose sum is σ = 5791639872. Its totient is φ = 5309003172.

The previous prime is 5550321481. The next prime is 5550321583. The reversal of 5550321521 is 1251230555.

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 a cyclic number.

It is not a de Polignac number, because 5550321521 - 2²² = 5546127217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5550321121) 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, 120659141 + ... + 120659186.

It is an arithmetic number, because the mean of its divisors is an integer number (1447909968).

Almost surely, 2^5550321521 is an apocalyptic number.

It is an amenable number.

5550321521 is a deficient number, since it is larger than the sum of its proper divisors (241318351).

5550321521 is a wasteful number, since it uses less digits than its factorization.

5550321521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241318350.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 5550321521 is about 74500.4800051651. The cubic root of 5550321521 is about 1770.5412413757.

The spelling of 5550321521 in words is "five billion, five hundred fifty million, three hundred twenty-one thousand, five hundred twenty-one".