1020523077 has 16 divisors (see below), whose sum is σ = 1727870080. Its totient is φ = 583155936.

The previous prime is 1020523057. The next prime is 1020523111. The reversal of 1020523077 is 7703250201.

It is not a de Polignac number, because 1020523077 - 2¹² = 1020518981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020523077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020523057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2699608 + ... + 2699985.

It is an arithmetic number, because the mean of its divisors is an integer number (107991880).

Almost surely, 2^1020523077 is an apocalyptic number.

It is an amenable number.

1020523077 is a deficient number, since it is larger than the sum of its proper divisors (707347003).

1020523077 is an equidigital number, since it uses as much as digits as its factorization.

1020523077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399609 (or 5399603 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 1020523077 is about 31945.6268838162. The cubic root of 1020523077 is about 1006.7947524378.

Adding to 1020523077 its reverse (7703250201), we get a palindrome (8723773278).

The spelling of 1020523077 in words is "one billion, twenty million, five hundred twenty-three thousand, seventy-seven".