41561997 has 4 divisors (see below), whose sum is σ = 55416000. Its totient is φ = 27707996.

The previous prime is 41561983. The next prime is 41561999. The reversal of 41561997 is 79916514.

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 a cyclic number.

It is not a de Polignac number, because 41561997 - 2⁴ = 41561981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41561999) 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, 6926997 + ... + 6927002.

It is an arithmetic number, because the mean of its divisors is an integer number (13854000).

Almost surely, 2^41561997 is an apocalyptic number.

It is an amenable number.

41561997 is a deficient number, since it is larger than the sum of its proper divisors (13854003).

41561997 is a wasteful number, since it uses less digits than its factorization.

41561997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13854002.

The product of its digits is 68040, while the sum is 42.

The square root of 41561997 is about 6446.8594679890. The cubic root of 41561997 is about 346.3900981805.

The spelling of 41561997 in words is "forty-one million, five hundred sixty-one thousand, nine hundred ninety-seven".