5981540 has 24 divisors (see below), whose sum is σ = 12995640. Its totient is φ = 2309888.

The previous prime is 5981539. The next prime is 5981567. The reversal of 5981540 is 451895.

It can be written as a sum of positive squares in 4 ways, for example, as 487204 + 5494336 = 698^2 + 2344^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 5981497 and 5981506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4577 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (541485).

Almost surely, 2^5981540 is an apocalyptic number.

It is an amenable number.

5981540 is an abundant number, since it is smaller than the sum of its proper divisors (7014100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5981540 is a wasteful number, since it uses less digits than its factorization.

5981540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351 (or 10349 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 5981540 is about 2445.7187082737. The cubic root of 5981540 is about 181.5255120257.

The spelling of 5981540 in words is "five million, nine hundred eighty-one thousand, five hundred forty".