40263505 has 8 divisors (see below), whose sum is σ = 48685824. Its totient is φ = 31964400.

The previous prime is 40263491. The next prime is 40263521. The reversal of 40263505 is 50536204.

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

It is not a de Polignac number, because 40263505 - 2²¹ = 38166353 is a prime.

It is a super-2 number, since 2×40263505² = 3242299669770050, which contains 22 as substring.

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 40263505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30081 + ... + 31390.

It is an arithmetic number, because the mean of its divisors is an integer number (6085728).

Almost surely, 2^40263505 is an apocalyptic number.

It is an amenable number.

40263505 is a deficient number, since it is larger than the sum of its proper divisors (8422319).

40263505 is a wasteful number, since it uses less digits than its factorization.

40263505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61607.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40263505 is about 6345.3530240641. The cubic root of 40263505 is about 342.7445249752.

Adding to 40263505 its reverse (50536204), we get a palindrome (90799709).

The spelling of 40263505 in words is "forty million, two hundred sixty-three thousand, five hundred five".