55355823 has 12 divisors (see below), whose sum is σ = 80219568. Its totient is φ = 36783360.

The previous prime is 55355821. The next prime is 55355837. The reversal of 55355823 is 32855355.

It is not a de Polignac number, because 55355823 - 2¹ = 55355821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55355821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7090 + ... + 12687.

It is an arithmetic number, because the mean of its divisors is an integer number (6684964).

Almost surely, 2^55355823 is an apocalyptic number.

55355823 is a deficient number, since it is larger than the sum of its proper divisors (24863745).

55355823 is a wasteful number, since it uses less digits than its factorization.

55355823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20094 (or 20091 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 55355823 is about 7440.1493936614. The cubic root of 55355823 is about 381.1135916909.

The spelling of 55355823 in words is "fifty-five million, three hundred fifty-five thousand, eight hundred twenty-three".