57191434 has 8 divisors (see below), whose sum is σ = 90833508. Its totient is φ = 26913600.

The previous prime is 57191429. The next prime is 57191437. The reversal of 57191434 is 43419175.

It can be written as a sum of positive squares in 2 ways, for example, as 54804409 + 2387025 = 7403^2 + 1545^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 1682101 = 57191434 / (5 + 7 + 1 + 9 + 1 + 4 + 3 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 57191434.

It is not an unprimeable number, because it can be changed into a prime (57191437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841017 + ... + 841084.

Almost surely, 2^57191434 is an apocalyptic number.

57191434 is a deficient number, since it is larger than the sum of its proper divisors (33642074).

57191434 is a wasteful number, since it uses less digits than its factorization.

57191434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682120.

The product of its digits is 15120, while the sum is 34.

The square root of 57191434 is about 7562.5018347105. The cubic root of 57191434 is about 385.2804702794.

The spelling of 57191434 in words is "fifty-seven million, one hundred ninety-one thousand, four hundred thirty-four".