40441551 has 4 divisors (see below), whose sum is σ = 53922072. Its totient is φ = 26961032.

The previous prime is 40441537. The next prime is 40441553. The reversal of 40441551 is 15514404.

It is a happy number.

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 40441551 - 2⁹ = 40441039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40441553) 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, 6740256 + ... + 6740261.

It is an arithmetic number, because the mean of its divisors is an integer number (13480518).

Almost surely, 2^40441551 is an apocalyptic number.

40441551 is a deficient number, since it is larger than the sum of its proper divisors (13480521).

40441551 is a wasteful number, since it uses less digits than its factorization.

40441551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13480520.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 40441551 is about 6359.3671854989. The cubic root of 40441551 is about 343.2489897655.

Adding to 40441551 its reverse (15514404), we get a palindrome (55955955).

The spelling of 40441551 in words is "forty million, four hundred forty-one thousand, five hundred fifty-one".