54223987 has 2 divisors, whose sum is σ = 54223988. Its totient is φ = 54223986.

The previous prime is 54223979. The next prime is 54224021. The reversal of 54223987 is 78932245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54223987 - 2³ = 54223979 is a prime.

It is not a weakly prime, because it can be changed into another prime (54223787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27111993 + 27111994.

It is an arithmetic number, because the mean of its divisors is an integer number (27111994).

Almost surely, 2^54223987 is an apocalyptic number.

54223987 is a deficient number, since it is larger than the sum of its proper divisors (1).

54223987 is an equidigital number, since it uses as much as digits as its factorization.

54223987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 54223987 is about 7363.6938420877. The cubic root of 54223987 is about 378.4981976441.

It can be divided in two parts, 5422 and 3987, that added together give a square (9409 = 97²).

The spelling of 54223987 in words is "fifty-four million, two hundred twenty-three thousand, nine hundred eighty-seven".