41561913 has 4 divisors (see below), whose sum is σ = 55415888. Its totient is φ = 27707940.

The previous prime is 41561899. The next prime is 41561921. The reversal of 41561913 is 31916514.

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 41561913 - 2¹⁰ = 41560889 is a prime.

It is a super-2 number, since 2×41561913² = 3454785224439138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (41561983) 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, 6926983 + ... + 6926988.

It is an arithmetic number, because the mean of its divisors is an integer number (13853972).

Almost surely, 2^41561913 is an apocalyptic number.

It is an amenable number.

41561913 is a deficient number, since it is larger than the sum of its proper divisors (13853975).

41561913 is a wasteful number, since it uses less digits than its factorization.

41561913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13853974.

The product of its digits is 3240, while the sum is 30.

The square root of 41561913 is about 6446.8529531858. The cubic root of 41561913 is about 346.3898648200.

The spelling of 41561913 in words is "forty-one million, five hundred sixty-one thousand, nine hundred thirteen".