1020501 has 12 divisors (see below), whose sum is σ = 1485900. Its totient is φ = 674880.

The previous prime is 1020491. The next prime is 1020517. The reversal of 1020501 is 1050201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40401 + 980100 = 201^2 + 990^2 .

It is not a de Polignac number, because 1020501 - 2¹⁴ = 1004117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020541) 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 11 ways as a sum of consecutive naturals, for example, 961 + ... + 1721.

It is an arithmetic number, because the mean of its divisors is an integer number (123825).

2^1020501 is an apocalyptic number.

It is an amenable number.

1020501 is a deficient number, since it is larger than the sum of its proper divisors (465399).

1020501 is a wasteful number, since it uses less digits than its factorization.

1020501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 1020501 is about 1010.1984953463. The cubic root of 1020501 is about 100.6787492380.

Adding to 1020501 its reverse (1050201), we get a palindrome (2070702).

It can be divided in two parts, 1020 and 501, that added together give a square (1521 = 39²).

The spelling of 1020501 in words is "one million, twenty thousand, five hundred one".