57071120 has 20 divisors (see below), whose sum is σ = 132690540. Its totient is φ = 22828416.

The previous prime is 57071111. The next prime is 57071123. The reversal of 57071120 is 2117075.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21977344 + 35093776 = 4688^2 + 5924^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×57071120² = 6514225476108800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57071123) 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, 356615 + ... + 356774.

It is an arithmetic number, because the mean of its divisors is an integer number (6634527).

Almost surely, 2^57071120 is an apocalyptic number.

It is an amenable number.

57071120 is an abundant number, since it is smaller than the sum of its proper divisors (75619420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57071120 is a wasteful number, since it uses less digits than its factorization.

57071120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713402 (or 713396 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 57071120 is about 7554.5430040473. The cubic root of 57071120 is about 385.0101082408.

Adding to 57071120 its reverse (2117075), we get a palindrome (59188195).

The spelling of 57071120 in words is "fifty-seven million, seventy-one thousand, one hundred twenty".