475750821 has 16 divisors (see below), whose sum is σ = 780719744. Its totient is φ = 250945344.

The previous prime is 475750813. The next prime is 475750889. The reversal of 475750821 is 128057574.

It is not a de Polignac number, because 475750821 - 2³ = 475750813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 475750821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475750021) 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, 871066 + ... + 871611.

It is an arithmetic number, because the mean of its divisors is an integer number (48794984).

Almost surely, 2^475750821 is an apocalyptic number.

It is an amenable number.

475750821 is a deficient number, since it is larger than the sum of its proper divisors (304968923).

475750821 is a wasteful number, since it uses less digits than its factorization.

475750821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742700.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 475750821 is about 21811.7129313587. The cubic root of 475750821 is about 780.6562639276.

The spelling of 475750821 in words is "four hundred seventy-five million, seven hundred fifty thousand, eight hundred twenty-one".