2151215526 has 16 divisors (see below), whose sum is σ = 4342641984. Its totient is φ = 710370024.

The previous prime is 2151215503. The next prime is 2151215533. The reversal of 2151215526 is 6255121512.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2151215493 and 2151215502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1674760 + ... + 1676043.

It is an arithmetic number, because the mean of its divisors is an integer number (271415124).

Almost surely, 2^2151215526 is an apocalyptic number.

2151215526 is an abundant number, since it is smaller than the sum of its proper divisors (2191426458).

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

2151215526 is a wasteful number, since it uses less digits than its factorization.

2151215526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350915.

The product of its digits is 6000, while the sum is 30.

The square root of 2151215526 is about 46381.1979793537. The cubic root of 2151215526 is about 1290.9060649731.

The spelling of 2151215526 in words is "two billion, one hundred fifty-one million, two hundred fifteen thousand, five hundred twenty-six".