54987047 has 4 divisors (see below), whose sum is σ = 55888536. Its totient is φ = 54085560.

The previous prime is 54987041. The next prime is 54987073. The reversal of 54987047 is 74078945.

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

It is a cyclic number.

It is not a de Polignac number, because 54987047 - 2⁶ = 54986983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54986989 and 54987007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54987041) 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, 450653 + ... + 450774.

It is an arithmetic number, because the mean of its divisors is an integer number (13972134).

Almost surely, 2^54987047 is an apocalyptic number.

54987047 is a deficient number, since it is larger than the sum of its proper divisors (901489).

54987047 is an equidigital number, since it uses as much as digits as its factorization.

54987047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901488.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 54987047 is about 7415.3251445908. The cubic root of 54987047 is about 380.2653894030.

The spelling of 54987047 in words is "fifty-four million, nine hundred eighty-seven thousand, forty-seven".