4020351550 has 48 divisors (see below), whose sum is σ = 8084237040. Its totient is φ = 1482312960.

The previous prime is 4020351523. The next prime is 4020351563. The reversal of 4020351550 is 551530204.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22039 + ... + 92338.

It is an arithmetic number, because the mean of its divisors is an integer number (168421605).

Almost surely, 2^4020351550 is an apocalyptic number.

4020351550 is an abundant number, since it is smaller than the sum of its proper divisors (4063885490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4020351550 is a wasteful number, since it uses less digits than its factorization.

4020351550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114445 (or 114440 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 4020351550 is about 63406.2422005909. The cubic root of 4020351550 is about 1590.0886716631.

Adding to 4020351550 its reverse (551530204), we get a palindrome (4571881754).

The spelling of 4020351550 in words is "four billion, twenty million, three hundred fifty-one thousand, five hundred fifty".