2020042551 has 16 divisors (see below), whose sum is σ = 2958416640. Its totient is φ = 1220345280.

The previous prime is 2020042543. The next prime is 2020042667. The reversal of 2020042551 is 1552400202.

It is a happy number.

It is not a de Polignac number, because 2020042551 - 2³ = 2020042543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020042351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769110 + ... + 771731.

It is an arithmetic number, because the mean of its divisors is an integer number (184901040).

Almost surely, 2^2020042551 is an apocalyptic number.

2020042551 is a deficient number, since it is larger than the sum of its proper divisors (938374089).

2020042551 is a wasteful number, since it uses less digits than its factorization.

2020042551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540886.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2020042551 is about 44944.8834796576. The cubic root of 2020042551 is about 1264.1157408754.

Adding to 2020042551 its reverse (1552400202), we get a palindrome (3572442753).

The spelling of 2020042551 in words is "two billion, twenty million, forty-two thousand, five hundred fifty-one".