40560821 has 8 divisors (see below), whose sum is σ = 47953920. Its totient is φ = 33567408.

The previous prime is 40560787. The next prime is 40560823. The reversal of 40560821 is 12806504.

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

It is not a de Polignac number, because 40560821 - 2¹⁴ = 40544437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40560823) 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, 99701 + ... + 100106.

It is an arithmetic number, because the mean of its divisors is an integer number (5994240).

Almost surely, 2^40560821 is an apocalyptic number.

It is an amenable number.

40560821 is a deficient number, since it is larger than the sum of its proper divisors (7393099).

40560821 is a wasteful number, since it uses less digits than its factorization.

40560821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199843.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 40560821 is about 6368.7377870344. The cubic root of 40560821 is about 343.5860945980.

The spelling of 40560821 in words is "forty million, five hundred sixty thousand, eight hundred twenty-one".