2001132455 has 16 divisors (see below), whose sum is σ = 2745145344. Its totient is φ = 1371837600.

The previous prime is 2001132437. The next prime is 2001132467. The reversal of 2001132455 is 5542311002.

It is not a de Polignac number, because 2001132455 - 2⁶ = 2001132391 is a prime.

It is a super-2 number, since 2×2001132455² = 8009062204908654050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001132455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221354 + ... + 230216.

It is an arithmetic number, because the mean of its divisors is an integer number (171571584).

Almost surely, 2^2001132455 is an apocalyptic number.

2001132455 is a deficient number, since it is larger than the sum of its proper divisors (744012889).

2001132455 is an equidigital number, since it uses as much as digits as its factorization.

2001132455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15326.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2001132455 is about 44734.0189900259. The cubic root of 2001132455 is about 1260.1588056747.

Adding to 2001132455 its reverse (5542311002), we get a palindrome (7543443457).

The spelling of 2001132455 in words is "two billion, one million, one hundred thirty-two thousand, four hundred fifty-five".