541061640 has 128 divisors (see below), whose sum is σ = 2061216000. Its totient is φ = 123669504.

The previous prime is 541061621. The next prime is 541061699. The reversal of 541061640 is 46160145.

541061640 is a `hidden beast` number, since 5 + 4 + 1 + 0 + 616 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28225 + ... + 43344.

It is an arithmetic number, because the mean of its divisors is an integer number (16103250).

Almost surely, 2^541061640 is an apocalyptic number.

It is an amenable number.

541061640 is an abundant number, since it is smaller than the sum of its proper divisors (1520154360).

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

541061640 is a wasteful number, since it uses less digits than its factorization.

541061640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71596 (or 71586 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 541061640 is about 23260.7317167797. The cubic root of 541061640 is about 814.8585901418.

The spelling of 541061640 in words is "five hundred forty-one million, sixty-one thousand, six hundred forty".