40570561 has 4 divisors (see below), whose sum is σ = 41026500. Its totient is φ = 40114624.

The previous prime is 40570511. The next prime is 40570573. The reversal of 40570561 is 16507504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7392961 + 33177600 = 2719^2 + 5760^2 .

It is a cyclic number.

It is not a de Polignac number, because 40570561 - 2⁷ = 40570433 is a prime.

It is a super-3 number, since 3×40570561³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227836 + ... + 228013.

It is an arithmetic number, because the mean of its divisors is an integer number (10256625).

Almost surely, 2^40570561 is an apocalyptic number.

It is an amenable number.

40570561 is a deficient number, since it is larger than the sum of its proper divisors (455939).

40570561 is an equidigital number, since it uses as much as digits as its factorization.

40570561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455938.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 40570561 is about 6369.5024138468. The cubic root of 40570561 is about 343.6135945405.

The spelling of 40570561 in words is "forty million, five hundred seventy thousand, five hundred sixty-one".