423556601 has 4 divisors (see below), whose sum is σ = 456137892. Its totient is φ = 390975312.

The previous prime is 423556597. The next prime is 423556603. The reversal of 423556601 is 106655324.

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 78340201 + 345216400 = 8851^2 + 18580^2 .

It is not a de Polignac number, because 423556601 - 2² = 423556597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423556603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16290626 + ... + 16290651.

It is an arithmetic number, because the mean of its divisors is an integer number (114034473).

Almost surely, 2^423556601 is an apocalyptic number.

It is an amenable number.

423556601 is a deficient number, since it is larger than the sum of its proper divisors (32581291).

423556601 is a wasteful number, since it uses less digits than its factorization.

423556601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32581290.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 423556601 is about 20580.4907861790. The cubic root of 423556601 is about 750.9951831928.

The spelling of 423556601 in words is "four hundred twenty-three million, five hundred fifty-six thousand, six hundred one".