48021901321 has 9 divisors (see below), whose sum is σ = 49627986183. Its totient is φ = 46466233560.

The previous prime is 48021901309. The next prime is 48021901337. The reversal of 48021901321 is 12310912084.

The square root of 48021901321 is 219139.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16799011321 + 31222890000 = 129611^2 + 176700^2 .

It is not a de Polignac number, because 48021901321 - 2⁹ = 48021900809 is a prime.

It is a super-2 number, since 2×48021901321² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48021901721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6789775 + ... + 6796843.

It is an arithmetic number, because the mean of its divisors is an integer number (5514220687).

Almost surely, 2^48021901321 is an apocalyptic number.

48021901321 is the 219139-th square number.

48021901321 is the 109570-th centered octagonal number.

It is an amenable number.

48021901321 is a deficient number, since it is larger than the sum of its proper divisors (1606084862).

48021901321 is an frugal number, since it uses more digits than its factorization.

48021901321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14200 (or 7100 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 48021901321 in words is "forty-eight billion, twenty-one million, nine hundred one thousand, three hundred twenty-one".