55153666 has 8 divisors (see below), whose sum is σ = 83727504. Its totient is φ = 27244500.

The previous prime is 55153639. The next prime is 55153667. The reversal of 55153666 is 66635155.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (55153667) 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, 165960 + ... + 166291.

It is an arithmetic number, because the mean of its divisors is an integer number (10465938).

Almost surely, 2^55153666 is an apocalyptic number.

55153666 is a deficient number, since it is larger than the sum of its proper divisors (28573838).

55153666 is a wasteful number, since it uses less digits than its factorization.

55153666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332336.

The product of its digits is 81000, while the sum is 37.

The square root of 55153666 is about 7426.5514204104. The cubic root of 55153666 is about 380.6490891631.

The spelling of 55153666 in words is "fifty-five million, one hundred fifty-three thousand, six hundred sixty-six".