55090523 has 4 divisors (see below), whose sum is σ = 58331160. Its totient is φ = 51849888.

The previous prime is 55090507. The next prime is 55090547. The reversal of 55090523 is 32509055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55090523 - 2⁴ = 55090507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55090223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620293 + ... + 1620326.

It is an arithmetic number, because the mean of its divisors is an integer number (14582790).

Almost surely, 2^55090523 is an apocalyptic number.

55090523 is a deficient number, since it is larger than the sum of its proper divisors (3240637).

55090523 is a wasteful number, since it uses less digits than its factorization.

55090523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240636.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 55090523 is about 7422.2990373603. The cubic root of 55090523 is about 380.5037709074.

Adding to 55090523 its reverse (32509055), we get a palindrome (87599578).

It can be divided in two parts, 5509052 and 3, that added together give a palindrome (5509055).

The spelling of 55090523 in words is "fifty-five million, ninety thousand, five hundred twenty-three".