541930921 has 4 divisors (see below), whose sum is σ = 619349632. Its totient is φ = 464512212.

The previous prime is 541930919. The next prime is 541930927. The reversal of 541930921 is 129039145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 129039145 = 5 ⋅25807829.

It is a cyclic number.

It is not a de Polignac number, because 541930921 - 2¹ = 541930919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541930927) 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 3 ways as a sum of consecutive naturals, for example, 38709345 + ... + 38709358.

It is an arithmetic number, because the mean of its divisors is an integer number (154837408).

Almost surely, 2^541930921 is an apocalyptic number.

It is an amenable number.

541930921 is a deficient number, since it is larger than the sum of its proper divisors (77418711).

541930921 is an equidigital number, since it uses as much as digits as its factorization.

541930921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77418710.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 541930921 is about 23279.4098078109. The cubic root of 541930921 is about 815.2947462903.

The spelling of 541930921 in words is "five hundred forty-one million, nine hundred thirty thousand, nine hundred twenty-one".