541551921 has 8 divisors (see below), whose sum is σ = 723679200. Its totient is φ = 360229632.

The previous prime is 541551893. The next prime is 541551929. The reversal of 541551921 is 129155145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 541551921 - 2⁷ = 541551793 is a prime.

It is a super-3 number, since 3×541551921³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (541551929) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 199675 + ... + 202368.

It is an arithmetic number, because the mean of its divisors is an integer number (90459900).

Almost surely, 2^541551921 is an apocalyptic number.

It is an amenable number.

541551921 is a deficient number, since it is larger than the sum of its proper divisors (182127279).

541551921 is a wasteful number, since it uses less digits than its factorization.

541551921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402495.

The product of its digits is 9000, while the sum is 33.

The square root of 541551921 is about 23271.2681433565. The cubic root of 541551921 is about 815.1046428674.

The spelling of 541551921 in words is "five hundred forty-one million, five hundred fifty-one thousand, nine hundred twenty-one".