2001481755 has 128 divisors (see below), whose sum is σ = 4179302400. Its totient is φ = 794271744.

The previous prime is 2001481753. The next prime is 2001481763. The reversal of 2001481755 is 5571841002.

It is not a de Polignac number, because 2001481755 - 2¹ = 2001481753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001481753) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5938947 + ... + 5939283.

It is an arithmetic number, because the mean of its divisors is an integer number (32650800).

Almost surely, 2^2001481755 is an apocalyptic number.

2001481755 is an abundant number, since it is smaller than the sum of its proper divisors (2177820645).

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

2001481755 is a wasteful number, since it uses less digits than its factorization.

2001481755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 2001481755 is about 44737.9230072206. The cubic root of 2001481755 is about 1260.2321221379.

The spelling of 2001481755 in words is "two billion, one million, four hundred eighty-one thousand, seven hundred fifty-five".