40151765 has 4 divisors (see below), whose sum is σ = 48182124. Its totient is φ = 32121408.

The previous prime is 40151759. The next prime is 40151791. The reversal of 40151765 is 56715104.

40151765 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 can be written as a sum of positive squares in 2 ways, for example, as 28366276 + 11785489 = 5326^2 + 3433^2 .

It is a cyclic number.

It is not a de Polignac number, because 40151765 - 2¹⁰ = 40150741 is a prime.

It is a super-2 number, since 2×40151765² = 3224328465230450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 4015172 + ... + 4015181.

It is an arithmetic number, because the mean of its divisors is an integer number (12045531).

Almost surely, 2^40151765 is an apocalyptic number.

It is an amenable number.

40151765 is a deficient number, since it is larger than the sum of its proper divisors (8030359).

40151765 is an equidigital number, since it uses as much as digits as its factorization.

40151765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8030358.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 40151765 is about 6336.5420380520. The cubic root of 40151765 is about 342.4271676345.

Adding to 40151765 its reverse (56715104), we get a palindrome (96866869).

The spelling of 40151765 in words is "forty million, one hundred fifty-one thousand, seven hundred sixty-five".