75550160221 has 4 divisors (see below), whose sum is σ = 75553128000. Its totient is φ = 75547192444.

The previous prime is 75550160197. The next prime is 75550160327. The reversal of 75550160221 is 12206105557.

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 75550160221 - 2⁷ = 75550160093 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 (75550170221) 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, 1445371 + ... + 1496728.

It is an arithmetic number, because the mean of its divisors is an integer number (18888282000).

Almost surely, 2^75550160221 is an apocalyptic number.

It is an amenable number.

75550160221 is a deficient number, since it is larger than the sum of its proper divisors (2967779).

75550160221 is a wasteful number, since it uses less digits than its factorization.

75550160221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967778.

The product of its (nonzero) digits is 21000, while the sum is 34.

Adding to 75550160221 its reverse (12206105557), we get a palindrome (87756265778).

The spelling of 75550160221 in words is "seventy-five billion, five hundred fifty million, one hundred sixty thousand, two hundred twenty-one".