7553087221 has 4 divisors (see below), whose sum is σ = 7648696000. Its totient is φ = 7457478444.

The previous prime is 7553087219. The next prime is 7553087237. The reversal of 7553087221 is 1227803557.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1227803557 = 1579 ⋅777583.

It is a cyclic number.

It is not a de Polignac number, because 7553087221 - 2¹ = 7553087219 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 (7553087021) 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 3 ways as a sum of consecutive naturals, for example, 47804271 + ... + 47804428.

It is an arithmetic number, because the mean of its divisors is an integer number (1912174000).

Almost surely, 2^7553087221 is an apocalyptic number.

It is an amenable number.

7553087221 is a deficient number, since it is larger than the sum of its proper divisors (95608779).

7553087221 is an equidigital number, since it uses as much as digits as its factorization.

7553087221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95608778.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 7553087221 is about 86908.4991298319. The cubic root of 7553087221 is about 1962.0413984385.

The spelling of 7553087221 in words is "seven billion, five hundred fifty-three million, eighty-seven thousand, two hundred twenty-one".