7148255621 has 8 divisors (see below), whose sum is σ = 7946448384. Its totient is φ = 6385538160.

The previous prime is 7148255603. The next prime is 7148255711. The reversal of 7148255621 is 1265528417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7148255621 - 2²⁶ = 7081146757 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 (7148255021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8868401 + ... + 8869206.

It is an arithmetic number, because the mean of its divisors is an integer number (993306048).

Almost surely, 2^7148255621 is an apocalyptic number.

It is an amenable number.

7148255621 is a deficient number, since it is larger than the sum of its proper divisors (798192763).

7148255621 is a wasteful number, since it uses less digits than its factorization.

7148255621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17737651.

The product of its digits is 134400, while the sum is 41.

The square root of 7148255621 is about 84547.3572679832. The cubic root of 7148255621 is about 1926.3418425104.

The spelling of 7148255621 in words is "seven billion, one hundred forty-eight million, two hundred fifty-five thousand, six hundred twenty-one".