55153623 has 8 divisors (see below), whose sum is σ = 84043648. Its totient is φ = 31516344.

The previous prime is 55153603. The next prime is 55153639. The reversal of 55153623 is 32635155.

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

It is not a de Polignac number, because 55153623 - 2⁵ = 55153591 is a prime.

It is a super-2 number, since 2×55153623² = 6083844260052258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55153603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313161 + ... + 1313202.

It is an arithmetic number, because the mean of its divisors is an integer number (10505456).

Almost surely, 2^55153623 is an apocalyptic number.

55153623 is a deficient number, since it is larger than the sum of its proper divisors (28890025).

55153623 is a wasteful number, since it uses less digits than its factorization.

55153623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626373.

The product of its digits is 13500, while the sum is 30.

The square root of 55153623 is about 7426.5485253919. The cubic root of 55153623 is about 380.6489902400.

Adding to 55153623 its reverse (32635155), we get a palindrome (87788778).

The spelling of 55153623 in words is "fifty-five million, one hundred fifty-three thousand, six hundred twenty-three".