40052661 has 32 divisors (see below), whose sum is σ = 60103296. Its totient is φ = 23520000.

The previous prime is 40052659. The next prime is 40052669. The reversal of 40052661 is 16625004.

40052661 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 40052661 - 2¹ = 40052659 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40052669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203215 + ... + 203411.

It is an arithmetic number, because the mean of its divisors is an integer number (1878228).

Almost surely, 2^40052661 is an apocalyptic number.

It is an amenable number.

40052661 is a deficient number, since it is larger than the sum of its proper divisors (20050635).

40052661 is a wasteful number, since it uses less digits than its factorization.

40052661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40052661 is about 6328.7171685895. The cubic root of 40052661 is about 342.1452052602.

Adding to 40052661 its reverse (16625004), we get a palindrome (56677665).

It can be divided in two parts, 4005 and 2661, that added together give a palindrome (6666).

The spelling of 40052661 in words is "forty million, fifty-two thousand, six hundred sixty-one".