55103407 has 4 divisors (see below), whose sum is σ = 55154736. Its totient is φ = 55052080.

The previous prime is 55103381. The next prime is 55103431. The reversal of 55103407 is 70430155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55103407 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 (55103437) 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, 24019 + ... + 26212.

It is an arithmetic number, because the mean of its divisors is an integer number (13788684).

Almost surely, 2^55103407 is an apocalyptic number.

55103407 is a deficient number, since it is larger than the sum of its proper divisors (51329).

55103407 is a wasteful number, since it uses less digits than its factorization.

55103407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51328.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 55103407 is about 7423.1669117702. The cubic root of 55103407 is about 380.5334313535.

The spelling of 55103407 in words is "fifty-five million, one hundred three thousand, four hundred seven".