57121683 has 16 divisors (see below), whose sum is σ = 81194400. Its totient is φ = 35595776.

The previous prime is 57121667. The next prime is 57121693. The reversal of 57121683 is 38612175.

It is a cyclic number.

It is not a de Polignac number, because 57121683 - 2⁴ = 57121667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57121643) 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, 3841 + ... + 11357.

It is an arithmetic number, because the mean of its divisors is an integer number (5074650).

Almost surely, 2^57121683 is an apocalyptic number.

57121683 is a deficient number, since it is larger than the sum of its proper divisors (24072717).

57121683 is a wasteful number, since it uses less digits than its factorization.

57121683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686.

The product of its digits is 10080, while the sum is 33.

The square root of 57121683 is about 7557.8887925134. Note that the first 3 decimals coincide. The cubic root of 57121683 is about 385.1237764722.

The spelling of 57121683 in words is "fifty-seven million, one hundred twenty-one thousand, six hundred eighty-three".