405375161 has 4 divisors (see below), whose sum is σ = 423000192. Its totient is φ = 387750132.

The previous prime is 405375109. The next prime is 405375181. The reversal of 405375161 is 161573504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 405375161 - 2²⁶ = 338266297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (405375181) 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, 8812481 + ... + 8812526.

It is an arithmetic number, because the mean of its divisors is an integer number (105750048).

Almost surely, 2^405375161 is an apocalyptic number.

It is an amenable number.

405375161 is a deficient number, since it is larger than the sum of its proper divisors (17625031).

405375161 is a wasteful number, since it uses less digits than its factorization.

405375161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17625030.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 405375161 is about 20133.9305899270. The cubic root of 405375161 is about 740.0920028050.

The spelling of 405375161 in words is "four hundred five million, three hundred seventy-five thousand, one hundred sixty-one".