1013557 has 4 divisors (see below), whose sum is σ = 1073196. Its totient is φ = 953920.

The previous prime is 1013533. The next prime is 1013563. The reversal of 1013557 is 7553101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7553101 = 911 ⋅8291.

It can be written as a sum of positive squares in 2 ways, for example, as 820836 + 192721 = 906^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013557 - 2⁷ = 1013429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013527) 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, 29794 + ... + 29827.

It is an arithmetic number, because the mean of its divisors is an integer number (268299).

2^1013557 is an apocalyptic number.

1013557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1013557 is a deficient number, since it is larger than the sum of its proper divisors (59639).

1013557 is an equidigital number, since it uses as much as digits as its factorization.

1013557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59638.

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

The square root of 1013557 is about 1006.7556803912. The cubic root of 1013557 is about 100.4498731069.

Adding to 1013557 its reverse (7553101), we get a palindrome (8566658).

The spelling of 1013557 in words is "one million, thirteen thousand, five hundred fifty-seven".