54644865 has 32 divisors (see below), whose sum is σ = 96823296. Its totient is φ = 26093760.

The previous prime is 54644857. The next prime is 54644867. The reversal of 54644865 is 56844645.

It is not a de Polignac number, because 54644865 - 2³ = 54644857 is a prime.

It is a super-2 number, since 2×54644865² = 5972122541736450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54644867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8584 + ... + 13526.

It is an arithmetic number, because the mean of its divisors is an integer number (3025728).

Almost surely, 2^54644865 is an apocalyptic number.

54644865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54644865 is a deficient number, since it is larger than the sum of its proper divisors (42178431).

54644865 is a wasteful number, since it uses less digits than its factorization.

54644865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029.

The product of its digits is 460800, while the sum is 42.

The square root of 54644865 is about 7392.2165146862. The cubic root of 54644865 is about 379.4749558620.

The spelling of 54644865 in words is "fifty-four million, six hundred forty-four thousand, eight hundred sixty-five".