165457401 has 8 divisors (see below), whose sum is σ = 220806144. Its totient is φ = 110206800.

The previous prime is 165457367. The next prime is 165457463. The reversal of 165457401 is 104754561.

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

It is not a de Polignac number, because 165457401 - 2⁷ = 165457273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165457601) 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, 20506 + ... + 27411.

It is an arithmetic number, because the mean of its divisors is an integer number (27600768).

Almost surely, 2^165457401 is an apocalyptic number.

It is an amenable number.

165457401 is a deficient number, since it is larger than the sum of its proper divisors (55348743).

165457401 is a wasteful number, since it uses less digits than its factorization.

165457401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49071.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 165457401 is about 12863.0245665629. The cubic root of 165457401 is about 548.9870070349.

The spelling of 165457401 in words is "one hundred sixty-five million, four hundred fifty-seven thousand, four hundred one".