55136423 has 8 divisors (see below), whose sum is σ = 61452720. Its totient is φ = 49161600.

The previous prime is 55136413. The next prime is 55136437. The reversal of 55136423 is 32463155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55136423 - 2²² = 50942119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55136413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85028 + ... + 85673.

It is an arithmetic number, because the mean of its divisors is an integer number (7681590).

Almost surely, 2^55136423 is an apocalyptic number.

55136423 is a deficient number, since it is larger than the sum of its proper divisors (6316297).

55136423 is a wasteful number, since it uses less digits than its factorization.

55136423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170737.

The product of its digits is 10800, while the sum is 29.

The square root of 55136423 is about 7425.3904274455. The cubic root of 55136423 is about 380.6094168751.

Adding to 55136423 its reverse (32463155), we get a palindrome (87599578).

The spelling of 55136423 in words is "fifty-five million, one hundred thirty-six thousand, four hundred twenty-three".