55623255 has 16 divisors (see below), whose sum is σ = 89679744. Its totient is φ = 29438240.

The previous prime is 55623251. The next prime is 55623259. The reversal of 55623255 is 55232655.

It is an interprime number because it is at equal distance from previous prime (55623251) and next prime (55623259).

It is not a de Polignac number, because 55623255 - 2² = 55623251 is a prime.

It is a Smith number, since the sum of its digits (33) 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 (55623251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12189 + ... + 16118.

It is an arithmetic number, because the mean of its divisors is an integer number (5604984).

Almost surely, 2^55623255 is an apocalyptic number.

55623255 is a deficient number, since it is larger than the sum of its proper divisors (34056489).

55623255 is a wasteful number, since it uses less digits than its factorization.

55623255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28446.

The product of its digits is 45000, while the sum is 33.

The square root of 55623255 is about 7458.0999591049. The cubic root of 55623255 is about 381.7263443059.

The spelling of 55623255 in words is "fifty-five million, six hundred twenty-three thousand, two hundred fifty-five".