55103197 has 4 divisors (see below), whose sum is σ = 55123200. Its totient is φ = 55083196.

The previous prime is 55103179. The next prime is 55103231. The reversal of 55103197 is 79130155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55103197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55103107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5053 + ... + 11650.

It is an arithmetic number, because the mean of its divisors is an integer number (13780800).

Almost surely, 2^55103197 is an apocalyptic number.

It is an amenable number.

55103197 is a deficient number, since it is larger than the sum of its proper divisors (20003).

55103197 is a wasteful number, since it uses less digits than its factorization.

55103197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20002.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 55103197 is about 7423.1527668505. The cubic root of 55103197 is about 380.5329479465.

The spelling of 55103197 in words is "fifty-five million, one hundred three thousand, one hundred ninety-seven".