2006154521 has 16 divisors (see below), whose sum is σ = 2379216000. Its totient is φ = 1690398864.

The previous prime is 2006154511. The next prime is 2006154589. The reversal of 2006154521 is 1254516002.

It is not a de Polignac number, because 2006154521 - 2⁶ = 2006154457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2006154511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29330 + ... + 69803.

It is an arithmetic number, because the mean of its divisors is an integer number (148701000).

Almost surely, 2^2006154521 is an apocalyptic number.

It is an amenable number.

2006154521 is a deficient number, since it is larger than the sum of its proper divisors (373061479).

2006154521 is an frugal number, since it uses more digits than its factorization.

2006154521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99213 (or 99199 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2006154521 is about 44790.1163316194. The cubic root of 2006154521 is about 1261.2120949318.

The spelling of 2006154521 in words is "two billion, six million, one hundred fifty-four thousand, five hundred twenty-one".