41421551 has 4 divisors (see below), whose sum is σ = 43222512. Its totient is φ = 39620592.

The previous prime is 41421533. The next prime is 41421557. The reversal of 41421551 is 15512414.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 41421551 - 2¹⁰ = 41420527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1800937 = 41421551 / (4 + 1 + 4 + 2 + 1 + 5 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41421557) 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, 900446 + ... + 900491.

It is an arithmetic number, because the mean of its divisors is an integer number (10805628).

Almost surely, 2^41421551 is an apocalyptic number.

41421551 is a deficient number, since it is larger than the sum of its proper divisors (1800961).

41421551 is a wasteful number, since it uses less digits than its factorization.

41421551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800960.

The product of its digits is 800, while the sum is 23.

The square root of 41421551 is about 6435.9576598980. The cubic root of 41421551 is about 345.9994848913. Note that the first 3 decimals are identical.

Adding to 41421551 its reverse (15512414), we get a palindrome (56933965).

The spelling of 41421551 in words is "forty-one million, four hundred twenty-one thousand, five hundred fifty-one".