40240551 has 8 divisors (see below), whose sum is σ = 57781360. Its totient is φ = 24763392.

The previous prime is 40240523. The next prime is 40240553. The reversal of 40240551 is 15504204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40240551 - 2¹¹ = 40238503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515866 + ... + 515943.

It is an arithmetic number, because the mean of its divisors is an integer number (7222670).

Almost surely, 2^40240551 is an apocalyptic number.

40240551 is a deficient number, since it is larger than the sum of its proper divisors (17540809).

40240551 is a wasteful number, since it uses less digits than its factorization.

40240551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031825.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40240551 is about 6343.5440409916. The cubic root of 40240551 is about 342.6793803457.

Adding to 40240551 its reverse (15504204), we get a palindrome (55744755).

The spelling of 40240551 in words is "forty million, two hundred forty thousand, five hundred fifty-one".