1057312385 has 4 divisors (see below), whose sum is σ = 1268774868. Its totient is φ = 845849904.

The previous prime is 1057312351. The next prime is 1057312427. The reversal of 1057312385 is 5832137501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5832137501 = 3677 ⋅1586113.

It can be written as a sum of positive squares in 2 ways, for example, as 176172529 + 881139856 = 13273^2 + 29684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1057312385 - 2⁸ = 1057312129 is a prime.

It is a super-2 number, since 2×1057312385² = 2235818958948776450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105731234 + ... + 105731243.

It is an arithmetic number, because the mean of its divisors is an integer number (317193717).

Almost surely, 2^1057312385 is an apocalyptic number.

It is an amenable number.

1057312385 is a deficient number, since it is larger than the sum of its proper divisors (211462483).

1057312385 is an equidigital number, since it uses as much as digits as its factorization.

1057312385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211462482.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1057312385 is about 32516.3402768516. The cubic root of 1057312385 is about 1018.7503551255.

Adding to 1057312385 its reverse (5832137501), we get a palindrome (6889449886).

The spelling of 1057312385 in words is "one billion, fifty-seven million, three hundred twelve thousand, three hundred eighty-five".