43540461 has 12 divisors (see below), whose sum is σ = 64920960. Its totient is φ = 28090440.

The previous prime is 43540447. The next prime is 43540489. The reversal of 43540461 is 16404534.

It is not a de Polignac number, because 43540461 - 2⁵ = 43540429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43540411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77751 + ... + 78308.

It is an arithmetic number, because the mean of its divisors is an integer number (5410080).

Almost surely, 2^43540461 is an apocalyptic number.

It is an amenable number.

43540461 is a deficient number, since it is larger than the sum of its proper divisors (21380499).

43540461 is a wasteful number, since it uses less digits than its factorization.

43540461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156096 (or 156093 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 43540461 is about 6598.5196066997. The cubic root of 43540461 is about 351.8014898491.

Adding to 43540461 its reverse (16404534), we get a palindrome (59944995).

The spelling of 43540461 in words is "forty-three million, five hundred forty thousand, four hundred sixty-one".