54681951 has 4 divisors (see below), whose sum is σ = 72909272. Its totient is φ = 36454632.

The previous prime is 54681947. The next prime is 54681953. The reversal of 54681951 is 15918645.

54681951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 54681951 - 2² = 54681947 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 (54681953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9113656 + ... + 9113661.

It is an arithmetic number, because the mean of its divisors is an integer number (18227318).

Almost surely, 2^54681951 is an apocalyptic number.

54681951 is a deficient number, since it is larger than the sum of its proper divisors (18227321).

54681951 is a wasteful number, since it uses less digits than its factorization.

54681951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18227320.

The product of its digits is 43200, while the sum is 39.

The square root of 54681951 is about 7394.7245384801. The cubic root of 54681951 is about 379.5607829304.

The spelling of 54681951 in words is "fifty-four million, six hundred eighty-one thousand, nine hundred fifty-one".