55555532 has 12 divisors (see below), whose sum is σ = 100574880. Its totient is φ = 26819856.

The previous prime is 55555531. The next prime is 55555543. The reversal of 55555532 is 23555555.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55555492 and 55555501.

It is not an unprimeable number, because it can be changed into a prime (55555531) 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, 239348 + ... + 239579.

It is an arithmetic number, because the mean of its divisors is an integer number (8381240).

Almost surely, 2^55555532 is an apocalyptic number.

It is an amenable number.

55555532 is a deficient number, since it is larger than the sum of its proper divisors (45019348).

55555532 is a wasteful number, since it uses less digits than its factorization.

55555532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478960 (or 478958 counting only the distinct ones).

The product of its digits is 93750, while the sum is 35.

The square root of 55555532 is about 7453.5583448444. The cubic root of 55555532 is about 381.5713602557.

It can be divided in two parts, 5555553 and 2, that added together give a palindrome (5555555).

The spelling of 55555532 in words is "fifty-five million, five hundred fifty-five thousand, five hundred thirty-two".