40505461 has 4 divisors (see below), whose sum is σ = 42266592. Its totient is φ = 38744332.

The previous prime is 40505449. The next prime is 40505467. The reversal of 40505461 is 16450504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40505461 - 2¹¹ = 40503413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40505467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880531 + ... + 880576.

It is an arithmetic number, because the mean of its divisors is an integer number (10566648).

Almost surely, 2^40505461 is an apocalyptic number.

It is an amenable number.

40505461 is a deficient number, since it is larger than the sum of its proper divisors (1761131).

40505461 is a wasteful number, since it uses less digits than its factorization.

40505461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761130.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40505461 is about 6364.3900728978. The cubic root of 40505461 is about 343.4297073426.

Adding to 40505461 its reverse (16450504), we get a palindrome (56955965).

The spelling of 40505461 in words is "forty million, five hundred five thousand, four hundred sixty-one".