55623553 has 8 divisors (see below), whose sum is σ = 57993408. Its totient is φ = 53302704.

The previous prime is 55623527. The next prime is 55623569. The reversal of 55623553 is 35532655.

55623553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55623553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55623053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9925 + ... + 14482.

It is an arithmetic number, because the mean of its divisors is an integer number (7249176).

Almost surely, 2^55623553 is an apocalyptic number.

55623553 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55623553 is a deficient number, since it is larger than the sum of its proper divisors (2369855).

55623553 is a wasteful number, since it uses less digits than its factorization.

55623553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24503.

The product of its digits is 67500, while the sum is 34.

The square root of 55623553 is about 7458.1199373569. The cubic root of 55623553 is about 381.7270260007.

The spelling of 55623553 in words is "fifty-five million, six hundred twenty-three thousand, five hundred fifty-three".