55100403 has 12 divisors (see below), whose sum is σ = 81283488. Its totient is φ = 35951760.

The previous prime is 55100393. The next prime is 55100407. The reversal of 55100403 is 30400155.

It is not a de Polignac number, because 55100403 - 2⁵ = 55100371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55100407) 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, 64708 + ... + 65553.

It is an arithmetic number, because the mean of its divisors is an integer number (6773624).

Almost surely, 2^55100403 is an apocalyptic number.

55100403 is a deficient number, since it is larger than the sum of its proper divisors (26183085).

55100403 is a wasteful number, since it uses less digits than its factorization.

55100403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130314 (or 130311 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55100403 is about 7422.9645694965. The cubic root of 55100403 is about 380.5265162142.

Adding to 55100403 its reverse (30400155), we get a palindrome (85500558).

The spelling of 55100403 in words is "fifty-five million, one hundred thousand, four hundred three".