2005154520 has 32 divisors (see below), whose sum is σ = 6015463920. Its totient is φ = 534707840.

The previous prime is 2005154509. The next prime is 2005154533. The reversal of 2005154520 is 254515002.

It is a happy number.

2005154520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8354691 + ... + 8354930.

Almost surely, 2^2005154520 is an apocalyptic number.

2005154520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2005154520 is an abundant number, since it is smaller than the sum of its proper divisors (4010309400).

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

2005154520 is a wasteful number, since it uses less digits than its factorization.

2005154520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16709635 (or 16709631 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 2005154520 is about 44778.9517519113. The cubic root of 2005154520 is about 1261.0025027396.

Adding to 2005154520 its reverse (254515002), we get a palindrome (2259669522).

The spelling of 2005154520 in words is "two billion, five million, one hundred fifty-four thousand, five hundred twenty".