541623261 has 4 divisors (see below), whose sum is σ = 722164352. Its totient is φ = 361082172.

The previous prime is 541623239. The next prime is 541623263. The reversal of 541623261 is 162326145.

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.

It is not a de Polignac number, because 541623261 - 2⁶ = 541623197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541623263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90270541 + ... + 90270546.

It is an arithmetic number, because the mean of its divisors is an integer number (180541088).

Almost surely, 2^541623261 is an apocalyptic number.

It is an amenable number.

541623261 is a deficient number, since it is larger than the sum of its proper divisors (180541091).

541623261 is a wasteful number, since it uses less digits than its factorization.

541623261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180541090.

The product of its digits is 8640, while the sum is 30.

The square root of 541623261 is about 23272.8008842941. The cubic root of 541623261 is about 815.1404332258.

The spelling of 541623261 in words is "five hundred forty-one million, six hundred twenty-three thousand, two hundred sixty-one".