40556013 has 8 divisors (see below), whose sum is σ = 56920800. Its totient is φ = 25614288.

The previous prime is 40556003. The next prime is 40556017. The reversal of 40556013 is 31065504.

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

It is not a de Polignac number, because 40556013 - 2¹³ = 40547821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40556017) 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, 355698 + ... + 355811.

It is an arithmetic number, because the mean of its divisors is an integer number (7115100).

Almost surely, 2^40556013 is an apocalyptic number.

It is an amenable number.

40556013 is a deficient number, since it is larger than the sum of its proper divisors (16364787).

40556013 is a wasteful number, since it uses less digits than its factorization.

40556013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711531.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 40556013 is about 6368.3603070178. The cubic root of 40556013 is about 343.5725180548.

The spelling of 40556013 in words is "forty million, five hundred fifty-six thousand, thirteen".