42220553 has 4 divisors (see below), whose sum is σ = 42327300. Its totient is φ = 42113808.

The previous prime is 42220517. The next prime is 42220559. The reversal of 42220553 is 35502224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26759929 + 15460624 = 5173^2 + 3932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42220553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42220559) 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, 52778 + ... + 53571.

It is an arithmetic number, because the mean of its divisors is an integer number (10581825).

Almost surely, 2^42220553 is an apocalyptic number.

It is an amenable number.

42220553 is a deficient number, since it is larger than the sum of its proper divisors (106747).

42220553 is a wasteful number, since it uses less digits than its factorization.

42220553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106746.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42220553 is about 6497.7344513299. The cubic root of 42220553 is about 348.2100534166.

Adding to 42220553 its reverse (35502224), we get a palindrome (77722777).

The spelling of 42220553 in words is "forty-two million, two hundred twenty thousand, five hundred fifty-three".