23542155 has 48 divisors (see below), whose sum is σ = 50232000. Its totient is φ = 9932544.

The previous prime is 23542153. The next prime is 23542163. The reversal of 23542155 is 55124532.

It is a happy number.

23542155 is a `hidden beast` number, since 235 + 421 + 5 + 5 = 666.

It is not a de Polignac number, because 23542155 - 2¹ = 23542153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23542153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1221 + ... + 6969.

It is an arithmetic number, because the mean of its divisors is an integer number (1046500).

Almost surely, 2^23542155 is an apocalyptic number.

23542155 is an abundant number, since it is smaller than the sum of its proper divisors (26689845).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23542155 is a wasteful number, since it uses less digits than its factorization.

23542155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780 (or 5777 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 23542155 is about 4852.0258655535. The cubic root of 23542155 is about 286.6038840036.

Adding to 23542155 its reverse (55124532), we get a palindrome (78666687).

The spelling of 23542155 in words is "twenty-three million, five hundred forty-two thousand, one hundred fifty-five".