165572601 has 8 divisors (see below), whose sum is σ = 220824000. Its totient is φ = 110351472.

The previous prime is 165572573. The next prime is 165572609. The reversal of 165572601 is 106275561.

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

It is not a de Polignac number, because 165572601 - 2⁵ = 165572569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165572609) 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, 13900 + ... + 22898.

It is an arithmetic number, because the mean of its divisors is an integer number (27603000).

Almost surely, 2^165572601 is an apocalyptic number.

It is an amenable number.

165572601 is a deficient number, since it is larger than the sum of its proper divisors (55251399).

165572601 is an equidigital number, since it uses as much as digits as its factorization.

165572601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15135.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 165572601 is about 12867.5017388769. The cubic root of 165572601 is about 549.1143885255.

The spelling of 165572601 in words is "one hundred sixty-five million, five hundred seventy-two thousand, six hundred one".