55393623 has 6 divisors (see below), whose sum is σ = 80013024. Its totient is φ = 36929076.

The previous prime is 55393577. The next prime is 55393627. The reversal of 55393623 is 32639355.

It is not a de Polignac number, because 55393623 - 2¹² = 55389527 is a prime.

It is a super-2 number, since 2×55393623² = 6136906938132258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55393627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3077415 + ... + 3077432.

It is an arithmetic number, because the mean of its divisors is an integer number (13335504).

Almost surely, 2^55393623 is an apocalyptic number.

55393623 is a deficient number, since it is larger than the sum of its proper divisors (24619401).

55393623 is a wasteful number, since it uses less digits than its factorization.

55393623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154853 (or 6154850 counting only the distinct ones).

The product of its digits is 72900, while the sum is 36.

The square root of 55393623 is about 7442.6892317226. The cubic root of 55393623 is about 381.2003203922.

The spelling of 55393623 in words is "fifty-five million, three hundred ninety-three thousand, six hundred twenty-three".