41978551 has 4 divisors (see below), whose sum is σ = 42030504. Its totient is φ = 41926600.

The previous prime is 41978549. The next prime is 41978579. The reversal of 41978551 is 15587914.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15587914 = 2 ⋅7793957.

It is a cyclic number.

It is not a de Polignac number, because 41978551 - 2¹ = 41978549 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 (41978501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24745 + ... + 26386.

It is an arithmetic number, because the mean of its divisors is an integer number (10507626).

Almost surely, 2^41978551 is an apocalyptic number.

41978551 is a deficient number, since it is larger than the sum of its proper divisors (51953).

41978551 is an equidigital number, since it uses as much as digits as its factorization.

41978551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51952.

The product of its digits is 50400, while the sum is 40.

The square root of 41978551 is about 6479.0856608012. The cubic root of 41978551 is about 347.5434819561.

The spelling of 41978551 in words is "forty-one million, nine hundred seventy-eight thousand, five hundred fifty-one".