55332558 has 28 divisors (see below), whose sum is σ = 124444608. Its totient is φ = 18443700.

The previous prime is 55332539. The next prime is 55332559. The reversal of 55332558 is 85523355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55332559) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 17518 + ... + 20433.

Almost surely, 2^55332558 is an apocalyptic number.

55332558 is an abundant number, since it is smaller than the sum of its proper divisors (69112050).

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

55332558 is an equidigital number, since it uses as much as digits as its factorization.

55332558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37971 (or 37956 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 55332558 is about 7438.5857526818. The cubic root of 55332558 is about 381.0601926103.

The spelling of 55332558 in words is "fifty-five million, three hundred thirty-two thousand, five hundred fifty-eight".