423625553 has 8 divisors (see below), whose sum is σ = 457773288. Its totient is φ = 389700864.

The previous prime is 423625549. The next prime is 423625583. The reversal of 423625553 is 355526324.

It can be written as a sum of positive squares in 4 ways, for example, as 145636624 + 277988929 = 12068^2 + 16673^2 .

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 423625553 - 2² = 423625549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423625583) 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, 51800 + ... + 59417.

It is an arithmetic number, because the mean of its divisors is an integer number (57221661).

Almost surely, 2^423625553 is an apocalyptic number.

It is an amenable number.

423625553 is a deficient number, since it is larger than the sum of its proper divisors (34147735).

423625553 is a wasteful number, since it uses less digits than its factorization.

423625553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111523.

The product of its digits is 108000, while the sum is 35.

The square root of 423625553 is about 20582.1658967175. The cubic root of 423625553 is about 751.0359332051.

The spelling of 423625553 in words is "four hundred twenty-three million, six hundred twenty-five thousand, five hundred fifty-three".