40570521 has 8 divisors (see below), whose sum is σ = 54133920. Its totient is φ = 27027072.

The previous prime is 40570511. The next prime is 40570573. The reversal of 40570521 is 12507504.

40570521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40570521 - 2⁷ = 40570393 is a prime.

It is a super-3 number, since 3×40570521³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 40570491 and 40570500.

It is not an unprimeable number, because it can be changed into a prime (40570511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681 + ... + 9033.

It is an arithmetic number, because the mean of its divisors is an integer number (6766740).

Almost surely, 2^40570521 is an apocalyptic number.

It is an amenable number.

40570521 is a deficient number, since it is larger than the sum of its proper divisors (13563399).

40570521 is a wasteful number, since it uses less digits than its factorization.

40570521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9975.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 40570521 is about 6369.4992738833. The cubic root of 40570521 is about 343.6134816134.

The spelling of 40570521 in words is "forty million, five hundred seventy thousand, five hundred twenty-one".