213565001 has 8 divisors (see below), whose sum is σ = 230112960. Its totient is φ = 197034192.

The previous prime is 213564991. The next prime is 213565003. The reversal of 213565001 is 100565312.

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 213565001 - 2²² = 209370697 is a prime.

It is a super-2 number, since 2×213565001² = 91220019304260002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213565003) 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, 34910 + ... + 40568.

It is an arithmetic number, because the mean of its divisors is an integer number (28764120).

Almost surely, 2^213565001 is an apocalyptic number.

It is an amenable number.

213565001 is a deficient number, since it is larger than the sum of its proper divisors (16547959).

213565001 is a wasteful number, since it uses less digits than its factorization.

213565001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 213565001 is about 14613.8633153592. The cubic root of 213565001 is about 597.7368455827.

The spelling of 213565001 in words is "two hundred thirteen million, five hundred sixty-five thousand, one".