55436566 has 8 divisors (see below), whose sum is σ = 87531480. Its totient is φ = 26259408.

The previous prime is 55436561. The next prime is 55436597. The reversal of 55436566 is 66563455.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55436561) 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, 729391 + ... + 729466.

It is an arithmetic number, because the mean of its divisors is an integer number (10941435).

Almost surely, 2^55436566 is an apocalyptic number.

55436566 is a deficient number, since it is larger than the sum of its proper divisors (32094914).

55436566 is a wasteful number, since it uses less digits than its factorization.

55436566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458878.

The product of its digits is 324000, while the sum is 40.

The square root of 55436566 is about 7445.5735843520. The cubic root of 55436566 is about 381.2988013853.

The spelling of 55436566 in words is "fifty-five million, four hundred thirty-six thousand, five hundred sixty-six".