71553442 has 16 divisors (see below), whose sum is σ = 113840640. Its totient is φ = 33613888.

The previous prime is 71553439. The next prime is 71553467. The reversal of 71553442 is 24435517.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22983 + ... + 25909.

It is an arithmetic number, because the mean of its divisors is an integer number (7115040).

Almost surely, 2^71553442 is an apocalyptic number.

71553442 is a deficient number, since it is larger than the sum of its proper divisors (42287198).

71553442 is a wasteful number, since it uses less digits than its factorization.

71553442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665.

The product of its digits is 16800, while the sum is 31.

The square root of 71553442 is about 8458.9267640759. The cubic root of 71553442 is about 415.1549080575.

Adding to 71553442 its reverse (24435517), we get a palindrome (95988959).

The spelling of 71553442 in words is "seventy-one million, five hundred fifty-three thousand, four hundred forty-two".