76557071 has 16 divisors (see below), whose sum is σ = 82246560. Its totient is φ = 71209152.

The previous prime is 76557053. The next prime is 76557077. The reversal of 76557071 is 17075567.

It is not a de Polignac number, because 76557071 - 2²² = 72362767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76557077) 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 15 ways as a sum of consecutive naturals, for example, 1048691 + ... + 1048763.

It is an arithmetic number, because the mean of its divisors is an integer number (5140410).

Almost surely, 2^76557071 is an apocalyptic number.

76557071 is a deficient number, since it is larger than the sum of its proper divisors (5689489).

76557071 is an frugal number, since it uses more digits than its factorization.

76557071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 76557071 is about 8749.6897659288. The cubic root of 76557071 is about 424.6147761947.

The spelling of 76557071 in words is "seventy-six million, five hundred fifty-seven thousand, seventy-one".