54749987 has 4 divisors (see below), whose sum is σ = 54796776. Its totient is φ = 54703200.

The previous prime is 54749953. The next prime is 54749993. The reversal of 54749987 is 78994745.

54749987 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 a cyclic number.

It is not a de Polignac number, because 54749987 - 2¹⁰ = 54748963 is a prime.

It is a super-2 number, since 2×54749987² = 5995122153000338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54749917) 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, 21593 + ... + 23994.

It is an arithmetic number, because the mean of its divisors is an integer number (13699194).

Almost surely, 2^54749987 is an apocalyptic number.

54749987 is a deficient number, since it is larger than the sum of its proper divisors (46789).

54749987 is a wasteful number, since it uses less digits than its factorization.

54749987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46788.

The product of its digits is 2540160, while the sum is 53.

The square root of 54749987 is about 7399.3234150157. The cubic root of 54749987 is about 379.7181358549.

The spelling of 54749987 in words is "fifty-four million, seven hundred forty-nine thousand, nine hundred eighty-seven".