422544261 has 4 divisors (see below), whose sum is σ = 563392352. Its totient is φ = 281696172.

The previous prime is 422544251. The next prime is 422544301. The reversal of 422544261 is 162445224.

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 not a de Polignac number, because 422544261 - 2¹³ = 422536069 is a prime.

It is a super-2 number, since 2×422544261² = 357087305008072242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422544251) 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, 70424041 + ... + 70424046.

It is an arithmetic number, because the mean of its divisors is an integer number (140848088).

Almost surely, 2^422544261 is an apocalyptic number.

It is an amenable number.

422544261 is a deficient number, since it is larger than the sum of its proper divisors (140848091).

422544261 is a wasteful number, since it uses less digits than its factorization.

422544261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140848090.

The product of its digits is 15360, while the sum is 30.

The square root of 422544261 is about 20555.8814211408. The cubic root of 422544261 is about 750.3963895746.

Adding to 422544261 its reverse (162445224), we get a palindrome (584989485).

The spelling of 422544261 in words is "four hundred twenty-two million, five hundred forty-four thousand, two hundred sixty-one".