55644503 has 4 divisors (see below), whose sum is σ = 57001728. Its totient is φ = 54287280.

The previous prime is 55644499. The next prime is 55644517. The reversal of 55644503 is 30544655.

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

It is not a de Polignac number, because 55644503 - 2² = 55644499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55644503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55644583) 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, 678551 + ... + 678632.

It is an arithmetic number, because the mean of its divisors is an integer number (14250432).

Almost surely, 2^55644503 is an apocalyptic number.

55644503 is a deficient number, since it is larger than the sum of its proper divisors (1357225).

55644503 is a wasteful number, since it uses less digits than its factorization.

55644503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357224.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 55644503 is about 7459.5243145927. The cubic root of 55644503 is about 381.7749444151.

The spelling of 55644503 in words is "fifty-five million, six hundred forty-four thousand, five hundred three".