54878503 has 4 divisors (see below), whose sum is σ = 55411408. Its totient is φ = 54345600.

The previous prime is 54878497. The next prime is 54878507. The reversal of 54878503 is 30587845.

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-54878503 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 (54878507) 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, 266298 + ... + 266503.

It is an arithmetic number, because the mean of its divisors is an integer number (13852852).

Almost surely, 2^54878503 is an apocalyptic number.

54878503 is a deficient number, since it is larger than the sum of its proper divisors (532905).

54878503 is a wasteful number, since it uses less digits than its factorization.

54878503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532904.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 54878503 is about 7408.0026322889. The cubic root of 54878503 is about 380.0150109490.

The spelling of 54878503 in words is "fifty-four million, eight hundred seventy-eight thousand, five hundred three".