54784861 has 4 divisors (see below), whose sum is σ = 55026432. Its totient is φ = 54543292.

The previous prime is 54784859. The next prime is 54784903. The reversal of 54784861 is 16848745.

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 not a de Polignac number, because 54784861 - 2¹ = 54784859 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 (54784801) 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, 120445 + ... + 120898.

It is an arithmetic number, because the mean of its divisors is an integer number (13756608).

Almost surely, 2^54784861 is an apocalyptic number.

It is an amenable number.

54784861 is a deficient number, since it is larger than the sum of its proper divisors (241571).

54784861 is a wasteful number, since it uses less digits than its factorization.

54784861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241570.

The product of its digits is 215040, while the sum is 43.

The square root of 54784861 is about 7401.6796066839. The cubic root of 54784861 is about 379.7987415339.

The spelling of 54784861 in words is "fifty-four million, seven hundred eighty-four thousand, eight hundred sixty-one".