7455053221 has 16 divisors (see below), whose sum is σ = 9341337600. Its totient is φ = 5779928880.

The previous prime is 7455053213. The next prime is 7455053257. The reversal of 7455053221 is 1223505547.

It is not a de Polignac number, because 7455053221 - 2³ = 7455053213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7455053201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227941 + ... + 258586.

It is an arithmetic number, because the mean of its divisors is an integer number (583833600).

Almost surely, 2^7455053221 is an apocalyptic number.

It is an amenable number.

7455053221 is a deficient number, since it is larger than the sum of its proper divisors (1886284379).

7455053221 is a wasteful number, since it uses less digits than its factorization.

7455053221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486744.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 7455053221 is about 86342.6500693603. The cubic root of 7455053221 is about 1953.5157456768.

Adding to 7455053221 its reverse (1223505547), we get a palindrome (8678558768).

The spelling of 7455053221 in words is "seven billion, four hundred fifty-five million, fifty-three thousand, two hundred twenty-one".