23135553 has 12 divisors (see below), whose sum is σ = 38192128. Its totient is φ = 13220280.

The previous prime is 23135543. The next prime is 23135557. The reversal of 23135553 is 35553132.

It is not a de Polignac number, because 23135553 - 2⁴ = 23135537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23135557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183553 + ... + 183678.

Almost surely, 2^23135553 is an apocalyptic number.

It is an amenable number.

23135553 is a deficient number, since it is larger than the sum of its proper divisors (15056575).

23135553 is a wasteful number, since it uses less digits than its factorization.

23135553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367244 (or 367241 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 23135553 is about 4809.9431389571. The cubic root of 23135553 is about 284.9442919741.

Adding to 23135553 its reverse (35553132), we get a palindrome (58688685).

The spelling of 23135553 in words is "twenty-three million, one hundred thirty-five thousand, five hundred fifty-three".