71544057 has 32 divisors (see below), whose sum is σ = 106517376. Its totient is φ = 42432000.

The previous prime is 71544043. The next prime is 71544061. The reversal of 71544057 is 75044517.

It is not a de Polignac number, because 71544057 - 2¹⁰ = 71543033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71544037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161278 + ... + 161720.

It is an arithmetic number, because the mean of its divisors is an integer number (3328668).

Almost surely, 2^71544057 is an apocalyptic number.

It is an amenable number.

71544057 is a deficient number, since it is larger than the sum of its proper divisors (34973319).

71544057 is a wasteful number, since it uses less digits than its factorization.

71544057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 71544057 is about 8458.3720064797. The cubic root of 71544057 is about 415.1367565936.

It can be divided in two parts, 7154 and 4057, that added together give a palindrome (11211).

The spelling of 71544057 in words is "seventy-one million, five hundred forty-four thousand, fifty-seven".