102021593 has 8 divisors (see below), whose sum is σ = 103472712. Its totient is φ = 100578816.

The previous prime is 102021581. The next prime is 102021599. The reversal of 102021593 is 395120201.

It can be written as a sum of positive squares in 4 ways, for example, as 2181529 + 99840064 = 1477^2 + 9992^2 .

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 102021593 - 2²⁶ = 34912729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102021599) 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, 24971 + ... + 28767.

It is an arithmetic number, because the mean of its divisors is an integer number (12934089).

Almost surely, 2^102021593 is an apocalyptic number.

It is an amenable number.

102021593 is a deficient number, since it is larger than the sum of its proper divisors (1451119).

102021593 is an equidigital number, since it uses as much as digits as its factorization.

102021593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 102021593 is about 10100.5738945864. The cubic root of 102021593 is about 467.2658409649.

Adding to 102021593 its reverse (395120201), we get a palindrome (497141794).

The spelling of 102021593 in words is "one hundred two million, twenty-one thousand, five hundred ninety-three".