1012557 has 16 divisors (see below), whose sum is σ = 1662080. Its totient is φ = 533952.

The previous prime is 1012549. The next prime is 1012559. The reversal of 1012557 is 7552101.

1012557 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 1012557 - 2³ = 1012549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1012557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1582 + ... + 2127.

It is an arithmetic number, because the mean of its divisors is an integer number (103880).

2^1012557 is an apocalyptic number.

It is an amenable number.

1012557 is a deficient number, since it is larger than the sum of its proper divisors (649523).

1012557 is a wasteful number, since it uses less digits than its factorization.

1012557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 1012557 is about 1006.2589130040. The cubic root of 1012557 is about 100.4168268068.

Adding to 1012557 its reverse (7552101), we get a palindrome (8564658).

The spelling of 1012557 in words is "one million, twelve thousand, five hundred fifty-seven".