423515553 has 4 divisors (see below), whose sum is σ = 564687408. Its totient is φ = 282343700.

The previous prime is 423515539. The next prime is 423515593. The reversal of 423515553 is 355515324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423515553 - 2¹⁸ = 423253409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423515593) 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, 70585923 + ... + 70585928.

It is an arithmetic number, because the mean of its divisors is an integer number (141171852).

Almost surely, 2^423515553 is an apocalyptic number.

It is an amenable number.

423515553 is a deficient number, since it is larger than the sum of its proper divisors (141171855).

423515553 is a wasteful number, since it uses less digits than its factorization.

423515553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141171854.

The product of its digits is 45000, while the sum is 33.

The square root of 423515553 is about 20579.4935068869. The cubic root of 423515553 is about 750.9709220936.

The spelling of 423515553 in words is "four hundred twenty-three million, five hundred fifteen thousand, five hundred fifty-three".