2001821552 has 10 divisors (see below), whose sum is σ = 3878529288. Its totient is φ = 1000910768.

The previous prime is 2001821543. The next prime is 2001821609. The reversal of 2001821552 is 2551281002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62556908 + ... + 62556939.

Almost surely, 2^2001821552 is an apocalyptic number.

It is an amenable number.

2001821552 is a deficient number, since it is larger than the sum of its proper divisors (1876707736).

2001821552 is a wasteful number, since it uses less digits than its factorization.

2001821552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125113855 (or 125113849 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 2001821552 is about 44741.7204854708. The cubic root of 2001821552 is about 1260.3034357804.

The spelling of 2001821552 in words is "two billion, one million, eight hundred twenty-one thousand, five hundred fifty-two".