57072111 has 16 divisors (see below), whose sum is σ = 81116928. Its totient is φ = 35568000.

The previous prime is 57072109. The next prime is 57072151. The reversal of 57072111 is 11127075.

It is a happy number.

It is not a de Polignac number, because 57072111 - 2¹ = 57072109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57072101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3996 + ... + 11406.

It is an arithmetic number, because the mean of its divisors is an integer number (5069808).

Almost surely, 2^57072111 is an apocalyptic number.

57072111 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

57072111 is a deficient number, since it is larger than the sum of its proper divisors (24044817).

57072111 is a wasteful number, since it uses less digits than its factorization.

57072111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 57072111 is about 7554.6085934349. The cubic root of 57072111 is about 385.0123367048.

Adding to 57072111 its reverse (11127075), we get a palindrome (68199186).

The spelling of 57072111 in words is "fifty-seven million, seventy-two thousand, one hundred eleven".