948557321 has 4 divisors (see below), whose sum is σ = 951795012. Its totient is φ = 945319632.

The previous prime is 948557303. The next prime is 948557353. The reversal of 948557321 is 123755849.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 837465721 + 111091600 = 28939^2 + 10540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-948557321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (948557021) 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 3 ways as a sum of consecutive naturals, for example, 1618406 + ... + 1618991.

It is an arithmetic number, because the mean of its divisors is an integer number (237948753).

Almost surely, 2^948557321 is an apocalyptic number.

It is an amenable number.

948557321 is a deficient number, since it is larger than the sum of its proper divisors (3237691).

948557321 is a wasteful number, since it uses less digits than its factorization.

948557321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237690.

The product of its digits is 302400, while the sum is 44.

The square root of 948557321 is about 30798.6577791955. The cubic root of 948557321 is about 982.5496985955.

The spelling of 948557321 in words is "nine hundred forty-eight million, five hundred fifty-seven thousand, three hundred twenty-one".