55423203 has 12 divisors (see below), whose sum is σ = 81226824. Its totient is φ = 33589600.

The previous prime is 55423157. The next prime is 55423217. The reversal of 55423203 is 30232455.

It is not a de Polignac number, because 55423203 - 2⁶ = 55423139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55423283) 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, 75978 + ... + 76703.

It is an arithmetic number, because the mean of its divisors is an integer number (6768902).

Almost surely, 2^55423203 is an apocalyptic number.

55423203 is a deficient number, since it is larger than the sum of its proper divisors (25803621).

55423203 is a wasteful number, since it uses less digits than its factorization.

55423203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152706 (or 152695 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 55423203 is about 7444.6761514521. The cubic root of 55423203 is about 381.2681615285.

Adding to 55423203 its reverse (30232455), we get a palindrome (85655658).

The spelling of 55423203 in words is "fifty-five million, four hundred twenty-three thousand, two hundred three".