475420181 has 16 divisors (see below), whose sum is σ = 516927744. Its totient is φ = 435523584.

The previous prime is 475420163. The next prime is 475420193. The reversal of 475420181 is 181024574.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 475420181 - 2⁶ = 475420117 is a prime.

It is a super-2 number, since 2×475420181² = 452048697004145522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475420151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152666 + ... + 155748.

It is an arithmetic number, because the mean of its divisors is an integer number (32307984).

Almost surely, 2^475420181 is an apocalyptic number.

It is an amenable number.

475420181 is a deficient number, since it is larger than the sum of its proper divisors (41507563).

475420181 is a wasteful number, since it uses less digits than its factorization.

475420181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 475420181 is about 21804.1322001129. The cubic root of 475420181 is about 780.4753737119.

The spelling of 475420181 in words is "four hundred seventy-five million, four hundred twenty thousand, one hundred eighty-one".