100401593 has 2 divisors, whose sum is σ = 100401594. Its totient is φ = 100401592.

The previous prime is 100401589. The next prime is 100401599. The reversal of 100401593 is 395104001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78198649 + 22202944 = 8843^2 + 4712^2 .

It is an emirp because it is prime and its reverse (395104001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100401593 - 2² = 100401589 is a prime.

It is not a weakly prime, because it can be changed into another prime (100401599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50200796 + 50200797.

It is an arithmetic number, because the mean of its divisors is an integer number (50200797).

Almost surely, 2^100401593 is an apocalyptic number.

It is an amenable number.

100401593 is a deficient number, since it is larger than the sum of its proper divisors (1).

100401593 is an equidigital number, since it uses as much as digits as its factorization.

100401593 is an evil number, because the sum of its binary digits is even.

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

The square root of 100401593 is about 10020.0595307613. The cubic root of 100401593 is about 464.7793966499.

Adding to 100401593 its reverse (395104001), we get a palindrome (495505594).

The spelling of 100401593 in words is "one hundred million, four hundred one thousand, five hundred ninety-three".