57142837 has 8 divisors (see below), whose sum is σ = 59120856. Its totient is φ = 55187712.

The previous prime is 57142793. The next prime is 57142843. The reversal of 57142837 is 73824175.

It can be written as a sum of positive squares in 4 ways, for example, as 14814801 + 42328036 = 3849^2 + 6506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57142837 - 2¹⁵ = 57110069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57142796 and 57142805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57142037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568 + ... + 10705.

It is an arithmetic number, because the mean of its divisors is an integer number (7390107).

Almost surely, 2^57142837 is an apocalyptic number.

It is an amenable number.

57142837 is a deficient number, since it is larger than the sum of its proper divisors (1978019).

57142837 is a wasteful number, since it uses less digits than its factorization.

57142837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11447.

The product of its digits is 47040, while the sum is 37.

The square root of 57142837 is about 7559.2881278597. The cubic root of 57142837 is about 385.1713118532.

The spelling of 57142837 in words is "fifty-seven million, one hundred forty-two thousand, eight hundred thirty-seven".