40645151 has 4 divisors (see below), whose sum is σ = 40762632. Its totient is φ = 40527672.

The previous prime is 40645133. The next prime is 40645217. The reversal of 40645151 is 15154604.

40645151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40645151 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 40645151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40645651) 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 3 ways as a sum of consecutive naturals, for example, 58220 + ... + 58913.

It is an arithmetic number, because the mean of its divisors is an integer number (10190658).

Almost surely, 2^40645151 is an apocalyptic number.

40645151 is a deficient number, since it is larger than the sum of its proper divisors (117481).

40645151 is a wasteful number, since it uses less digits than its factorization.

40645151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117480.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 40645151 is about 6375.3549705095. The cubic root of 40645151 is about 343.8240463738.

Adding to 40645151 its reverse (15154604), we get a palindrome (55799755).

The spelling of 40645151 in words is "forty million, six hundred forty-five thousand, one hundred fifty-one".