40560521 has 8 divisors (see below), whose sum is σ = 43994664. Its totient is φ = 37242880.

The previous prime is 40560517. The next prime is 40560551. The reversal of 40560521 is 12506504.

It can be written as a sum of positive squares in 4 ways, for example, as 2676496 + 37884025 = 1636^2 + 6155^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40560521 - 2² = 40560517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40560551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28400 + ... + 29793.

It is an arithmetic number, because the mean of its divisors is an integer number (5499333).

Almost surely, 2^40560521 is an apocalyptic number.

40560521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40560521 is a deficient number, since it is larger than the sum of its proper divisors (3434143).

40560521 is a wasteful number, since it uses less digits than its factorization.

40560521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58251.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40560521 is about 6368.7142344432. The cubic root of 40560521 is about 343.5852475073.

The spelling of 40560521 in words is "forty million, five hundred sixty thousand, five hundred twenty-one".