55032646 has 4 divisors (see below), whose sum is σ = 82548972. Its totient is φ = 27516322.

The previous prime is 55032641. The next prime is 55032667. The reversal of 55032646 is 64623055.

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

It is a super-2 number, since 2×55032646² = 6057184251522632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55032641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13758160 + ... + 13758163.

It is an arithmetic number, because the mean of its divisors is an integer number (20637243).

Almost surely, 2^55032646 is an apocalyptic number.

55032646 is a deficient number, since it is larger than the sum of its proper divisors (27516326).

55032646 is a wasteful number, since it uses less digits than its factorization.

55032646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27516325.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 55032646 is about 7418.3991534562. The cubic root of 55032646 is about 380.3704743369.

The spelling of 55032646 in words is "fifty-five million, thirty-two thousand, six hundred forty-six".