54009531 has 8 divisors (see below), whose sum is σ = 80014160. Its totient is φ = 36006336.

The previous prime is 54009517. The next prime is 54009539. The reversal of 54009531 is 13590045.

54009531 is a `hidden beast` number, since 540 + 0 + 95 + 31 = 666.

It is not a de Polignac number, because 54009531 - 2⁶ = 54009467 is a prime.

It is a super-2 number, since 2×54009531² = 5834058877679922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2000353 = 54009531 / (5 + 4 + 0 + 0 + 9 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54009495 and 54009504.

It is not an unprimeable number, because it can be changed into a prime (54009539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000150 + ... + 1000203.

It is an arithmetic number, because the mean of its divisors is an integer number (10001770).

Almost surely, 2^54009531 is an apocalyptic number.

54009531 is a deficient number, since it is larger than the sum of its proper divisors (26004629).

54009531 is a wasteful number, since it uses less digits than its factorization.

54009531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000362 (or 2000356 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 54009531 is about 7349.1177021463. The cubic root of 54009531 is about 377.9985512668.

Adding to 54009531 its reverse (13590045), we get a palindrome (67599576).

The spelling of 54009531 in words is "fifty-four million, nine thousand, five hundred thirty-one".