57072671 has 4 divisors (see below), whose sum is σ = 57090600. Its totient is φ = 57054744.

The previous prime is 57072649. The next prime is 57072731. The reversal of 57072671 is 17627075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57072671 - 2⁶ = 57072607 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 (57092671) 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, 2756 + ... + 11033.

It is an arithmetic number, because the mean of its divisors is an integer number (14272650).

Almost surely, 2^57072671 is an apocalyptic number.

57072671 is a deficient number, since it is larger than the sum of its proper divisors (17929).

57072671 is a wasteful number, since it uses less digits than its factorization.

57072671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17928.

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

The square root of 57072671 is about 7554.6456568128. The cubic root of 57072671 is about 385.0135959667.

The spelling of 57072671 in words is "fifty-seven million, seventy-two thousand, six hundred seventy-one".