423401553 has 16 divisors (see below), whose sum is σ = 627916800. Its totient is φ = 281972880.

The previous prime is 423401543. The next prime is 423401579. The reversal of 423401553 is 355104324.

It is not a de Polignac number, because 423401553 - 2¹⁷ = 423270481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (423401543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19888 + ... + 35246.

It is an arithmetic number, because the mean of its divisors is an integer number (39244800).

Almost surely, 2^423401553 is an apocalyptic number.

It is an amenable number.

423401553 is a deficient number, since it is larger than the sum of its proper divisors (204515247).

423401553 is a wasteful number, since it uses less digits than its factorization.

423401553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16389 (or 16383 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 423401553 is about 20576.7235730084. The cubic root of 423401553 is about 750.9035350621.

Adding to 423401553 its reverse (355104324), we get a palindrome (778505877).

The spelling of 423401553 in words is "four hundred twenty-three million, four hundred one thousand, five hundred fifty-three".