41402581 has 4 divisors (see below), whose sum is σ = 45166464. Its totient is φ = 37638700.

The previous prime is 41402573. The next prime is 41402587. The reversal of 41402581 is 18520414.

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 41402581 - 2³ = 41402573 is a prime.

It is a super-2 number, since 2×41402581² = 3428347426923122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41402587) 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, 1881925 + ... + 1881946.

It is an arithmetic number, because the mean of its divisors is an integer number (11291616).

Almost surely, 2^41402581 is an apocalyptic number.

It is an amenable number.

41402581 is a deficient number, since it is larger than the sum of its proper divisors (3763883).

41402581 is a wasteful number, since it uses less digits than its factorization.

41402581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3763882.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 41402581 is about 6434.4837399748. The cubic root of 41402581 is about 345.9466572181.

Adding to 41402581 its reverse (18520414), we get a palindrome (59922995).

The spelling of 41402581 in words is "forty-one million, four hundred two thousand, five hundred eighty-one".