423261553 has 16 divisors (see below), whose sum is σ = 498790656. Its totient is φ = 354090240.

The previous prime is 423261439. The next prime is 423261593. The reversal of 423261553 is 355162324.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 423261553 - 2¹³ = 423253361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423261593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43800 + ... + 52582.

It is an arithmetic number, because the mean of its divisors is an integer number (31174416).

Almost surely, 2^423261553 is an apocalyptic number.

It is an amenable number.

423261553 is a deficient number, since it is larger than the sum of its proper divisors (75529103).

423261553 is a wasteful number, since it uses less digits than its factorization.

423261553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9144.

The product of its digits is 21600, while the sum is 31.

The square root of 423261553 is about 20573.3213896055. The cubic root of 423261553 is about 750.8207625079.

The spelling of 423261553 in words is "four hundred twenty-three million, two hundred sixty-one thousand, five hundred fifty-three".