71276057 has 4 divisors (see below), whose sum is σ = 74375040. Its totient is φ = 68177076.

The previous prime is 71276041. The next prime is 71276089. The reversal of 71276057 is 75067217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75067217 = 503 ⋅149239.

It is a cyclic number.

It is not a de Polignac number, because 71276057 - 2⁴ = 71276041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71270057) 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, 1549457 + ... + 1549502.

It is an arithmetic number, because the mean of its divisors is an integer number (18593760).

Almost surely, 2^71276057 is an apocalyptic number.

It is an amenable number.

71276057 is a deficient number, since it is larger than the sum of its proper divisors (3098983).

71276057 is a wasteful number, since it uses less digits than its factorization.

71276057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098982.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 71276057 is about 8442.5148504459. The cubic root of 71276057 is about 414.6177483738.

The spelling of 71276057 in words is "seventy-one million, two hundred seventy-six thousand, fifty-seven".