1057513 has 4 divisors (see below), whose sum is σ = 1083348. Its totient is φ = 1031680.

The previous prime is 1057493. The next prime is 1057531. The reversal of 1057513 is 3157501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63504 + 994009 = 252^2 + 997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057513 is a prime.

It is a super-2 number, since 2×1057513² = 2236667490338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057013) 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, 12856 + ... + 12937.

It is an arithmetic number, because the mean of its divisors is an integer number (270837).

2^1057513 is an apocalyptic number.

It is an amenable number.

1057513 is a deficient number, since it is larger than the sum of its proper divisors (25835).

1057513 is an equidigital number, since it uses as much as digits as its factorization.

1057513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25834.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 1057513 is about 1028.3545108570. The cubic root of 1057513 is about 101.8814783791.

The spelling of 1057513 in words is "one million, fifty-seven thousand, five hundred thirteen".