40245551 has 8 divisors (see below), whose sum is σ = 40600560. Its totient is φ = 39892608.

The previous prime is 40245547. The next prime is 40245599. The reversal of 40245551 is 15554204.

40245551 is nontrivially palindromic in base 13.

40245551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40245551 - 2² = 40245547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40245551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40245521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103265 + ... + 103653.

It is an arithmetic number, because the mean of its divisors is an integer number (5075070).

Almost surely, 2^40245551 is an apocalyptic number.

40245551 is a deficient number, since it is larger than the sum of its proper divisors (355009).

40245551 is a wasteful number, since it uses less digits than its factorization.

40245551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 40245551 is about 6343.9381302153. The cubic root of 40245551 is about 342.6935727122.

Adding to 40245551 its reverse (15554204), we get a palindrome (55799755).

The spelling of 40245551 in words is "forty million, two hundred forty-five thousand, five hundred fifty-one".