2020551 has 16 divisors (see below), whose sum is σ = 2935296. Its totient is φ = 1228896.

The previous prime is 2020547. The next prime is 2020561. The reversal of 2020551 is 1550202.

2020551 = 69² + 70² + ... + 185².

It is not a de Polignac number, because 2020551 - 2² = 2020547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020511) 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, 3766 + ... + 4268.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

2^2020551 is an apocalyptic number.

2020551 is a deficient number, since it is larger than the sum of its proper divisors (914745).

2020551 is a wasteful number, since it uses less digits than its factorization.

2020551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2020551 is about 1421.4608682619. The cubic root of 2020551 is about 126.4221792184.

Adding to 2020551 its reverse (1550202), we get a palindrome (3570753).

The spelling of 2020551 in words is "two million, twenty thousand, five hundred fifty-one".