57142011 has 4 divisors (see below), whose sum is σ = 76189352. Its totient is φ = 38094672.

The previous prime is 57142009. The next prime is 57142013. The reversal of 57142011 is 11024175.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (57142009) and next prime (57142013).

It is not a de Polignac number, because 57142011 - 2¹ = 57142009 is a prime.

It is a super-2 number, since 2×57142011² = 6530418842248242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57142013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9523666 + ... + 9523671.

It is an arithmetic number, because the mean of its divisors is an integer number (19047338).

Almost surely, 2^57142011 is an apocalyptic number.

57142011 is a deficient number, since it is larger than the sum of its proper divisors (19047341).

57142011 is a wasteful number, since it uses less digits than its factorization.

57142011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19047340.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 57142011 is about 7559.2334928880. The cubic root of 57142011 is about 385.1694559598.

Adding to 57142011 its reverse (11024175), we get a palindrome (68166186).

The spelling of 57142011 in words is "fifty-seven million, one hundred forty-two thousand, eleven".