54159985 has 16 divisors (see below), whose sum is σ = 71451072. Its totient is φ = 39083200.

The previous prime is 54159983. The next prime is 54159997. The reversal of 54159985 is 58995145.

It is not a de Polignac number, because 54159985 - 2¹ = 54159983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54159983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3447 + ... + 10963.

It is an arithmetic number, because the mean of its divisors is an integer number (4465692).

Almost surely, 2^54159985 is an apocalyptic number.

54159985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54159985 is a deficient number, since it is larger than the sum of its proper divisors (17291087).

54159985 is a wasteful number, since it uses less digits than its factorization.

54159985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7664.

The product of its digits is 324000, while the sum is 46.

The square root of 54159985 is about 7359.3467780775. The cubic root of 54159985 is about 378.3492218849.

It can be divided in two parts, 5415 and 9985, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 54159985 in words is "fifty-four million, one hundred fifty-nine thousand, nine hundred eighty-five".