41555021 has 12 divisors (see below), whose sum is σ = 44992692. Its totient is φ = 38358528.

The previous prime is 41555011. The next prime is 41555039. The reversal of 41555021 is 12055514.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 19096900 + 22458121 = 4370^2 + 4739^2 .

It is a de Polignac number, because none of the positive numbers 2^k-41555021 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 (41555011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13961 + ... + 16673.

It is an arithmetic number, because the mean of its divisors is an integer number (3749391).

Almost surely, 2^41555021 is an apocalyptic number.

It is an amenable number.

41555021 is a deficient number, since it is larger than the sum of its proper divisors (3437671).

41555021 is a wasteful number, since it uses less digits than its factorization.

41555021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800 (or 2783 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 41555021 is about 6446.3184066566. The cubic root of 41555021 is about 346.3707170735.

The spelling of 41555021 in words is "forty-one million, five hundred fifty-five thousand, twenty-one".