42197553 has 24 divisors (see below), whose sum is σ = 64794600. Its totient is φ = 26371584.

The previous prime is 42197549. The next prime is 42197563. The reversal of 42197553 is 35579124.

It can be written as a sum of positive squares in 4 ways, for example, as 1595169 + 40602384 = 1263^2 + 6372^2 .

It is not a de Polignac number, because 42197553 - 2² = 42197549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42197563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59163 + ... + 59871.

It is an arithmetic number, because the mean of its divisors is an integer number (2699775).

Almost surely, 2^42197553 is an apocalyptic number.

It is an amenable number.

42197553 is a deficient number, since it is larger than the sum of its proper divisors (22597047).

42197553 is a wasteful number, since it uses less digits than its factorization.

42197553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1118 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 42197553 is about 6495.9643625870. The cubic root of 42197553 is about 348.1468118167.

The spelling of 42197553 in words is "forty-two million, one hundred ninety-seven thousand, five hundred fifty-three".