54767989 has 4 divisors (see below), whose sum is σ = 55696320. Its totient is φ = 53839660.

The previous prime is 54767987. The next prime is 54768023. The reversal of 54767989 is 98976745.

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 54767989 - 2¹ = 54767987 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 (54767981) 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, 464077 + ... + 464194.

It is an arithmetic number, because the mean of its divisors is an integer number (13924080).

Almost surely, 2^54767989 is an apocalyptic number.

54767989 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

54767989 is a deficient number, since it is larger than the sum of its proper divisors (928331).

54767989 is an equidigital number, since it uses as much as digits as its factorization.

54767989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928330.

The product of its digits is 3810240, while the sum is 55.

The square root of 54767989 is about 7400.5397776108. The cubic root of 54767989 is about 379.7597488744.

The spelling of 54767989 in words is "fifty-four million, seven hundred sixty-seven thousand, nine hundred eighty-nine".