2021552140 has 24 divisors (see below), whose sum is σ = 4308624432. Its totient is φ = 796551360.

The previous prime is 2021552123. The next prime is 2021552149. The reversal of 2021552140 is 412551202.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (2021552149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752971 + ... + 755650.

It is an arithmetic number, because the mean of its divisors is an integer number (179526018).

Almost surely, 2^2021552140 is an apocalyptic number.

2021552140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021552140 is an abundant number, since it is smaller than the sum of its proper divisors (2287072292).

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

2021552140 is a wasteful number, since it uses less digits than its factorization.

2021552140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508697 (or 1508695 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2021552140 is about 44961.6741236356. The cubic root of 2021552140 is about 1264.4305560350.

The spelling of 2021552140 in words is "two billion, twenty-one million, five hundred fifty-two thousand, one hundred forty".