41551861 has 8 divisors (see below), whose sum is σ = 45015320. Its totient is φ = 38353536.

The previous prime is 41551849. The next prime is 41551907. The reversal of 41551861 is 16815514.

It can be written as a sum of positive squares in 4 ways, for example, as 3186225 + 38365636 = 1785^2 + 6194^2 .

It is not a de Polignac number, because 41551861 - 2¹³ = 41543669 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 (41551801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7260 + ... + 11653.

It is an arithmetic number, because the mean of its divisors is an integer number (5626915).

Almost surely, 2^41551861 is an apocalyptic number.

It is an amenable number.

41551861 is a deficient number, since it is larger than the sum of its proper divisors (3463459).

41551861 is an equidigital number, since it uses as much as digits as its factorization.

41551861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18952 (or 18926 counting only the distinct ones).

The product of its digits is 4800, while the sum is 31.

The square root of 41551861 is about 6446.0733008553. The cubic root of 41551861 is about 346.3619370739.

The spelling of 41551861 in words is "forty-one million, five hundred fifty-one thousand, eight hundred sixty-one".