57072887 has 2 divisors, whose sum is σ = 57072888. Its totient is φ = 57072886.

The previous prime is 57072877. The next prime is 57072929. The reversal of 57072887 is 78827075.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57072887 - 2⁶ = 57072823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57072857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28536443 + 28536444.

It is an arithmetic number, because the mean of its divisors is an integer number (28536444).

Almost surely, 2^57072887 is an apocalyptic number.

57072887 is a deficient number, since it is larger than the sum of its proper divisors (1).

57072887 is an equidigital number, since it uses as much as digits as its factorization.

57072887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 57072887 is about 7554.6599526385. The cubic root of 57072887 is about 385.0140816798.

The spelling of 57072887 in words is "fifty-seven million, seventy-two thousand, eight hundred eighty-seven".