2420020551 has 16 divisors (see below), whose sum is σ = 3489454080. Its totient is φ = 1483006560.

The previous prime is 2420020541. The next prime is 2420020579. The reversal of 2420020551 is 1550200242.

It is a happy number.

It is not a de Polignac number, because 2420020551 - 2⁷ = 2420020423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420020501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120495 + ... + 139136.

It is an arithmetic number, because the mean of its divisors is an integer number (218090880).

Almost surely, 2^2420020551 is an apocalyptic number.

2420020551 is a deficient number, since it is larger than the sum of its proper divisors (1069433529).

2420020551 is a wasteful number, since it uses less digits than its factorization.

2420020551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259886.

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

The square root of 2420020551 is about 49193.7043837929. The cubic root of 2420020551 is about 1342.5784893545.

Adding to 2420020551 its reverse (1550200242), we get a palindrome (3970220793).

The spelling of 2420020551 in words is "two billion, four hundred twenty million, twenty thousand, five hundred fifty-one".