57409811 has 4 divisors (see below), whose sum is σ = 60431400. Its totient is φ = 54388224.

The previous prime is 57409777. The next prime is 57409843. The reversal of 57409811 is 11890475.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57409811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57409211) 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, 1510766 + ... + 1510803.

It is an arithmetic number, because the mean of its divisors is an integer number (15107850).

Almost surely, 2^57409811 is an apocalyptic number.

57409811 is a deficient number, since it is larger than the sum of its proper divisors (3021589).

57409811 is a wasteful number, since it uses less digits than its factorization.

57409811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021588.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 57409811 is about 7576.9262237401. The cubic root of 57409811 is about 385.7702262127.

It can be divided in two parts, 5740 and 9811, that added together give a palindrome (15551).

The spelling of 57409811 in words is "fifty-seven million, four hundred nine thousand, eight hundred eleven".