575447421 has 16 divisors (see below), whose sum is σ = 789772544. Its totient is φ = 372423744.

The previous prime is 575447417. The next prime is 575447503. The reversal of 575447421 is 124744575.

It is not a de Polignac number, because 575447421 - 2² = 575447417 is a prime.

It is a super-2 number, since 2×575447421² = 662279468671102482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 575447421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (575447401) 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, 45795 + ... + 56991.

It is an arithmetic number, because the mean of its divisors is an integer number (49360784).

Almost surely, 2^575447421 is an apocalyptic number.

It is an amenable number.

575447421 is a deficient number, since it is larger than the sum of its proper divisors (214325123).

575447421 is a wasteful number, since it uses less digits than its factorization.

575447421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11700.

The product of its digits is 156800, while the sum is 39.

The square root of 575447421 is about 23988.4851751835. The cubic root of 575447421 is about 831.7673768150.

The spelling of 575447421 in words is "five hundred seventy-five million, four hundred forty-seven thousand, four hundred twenty-one".