2152021534 has 16 divisors (see below), whose sum is σ = 3680833968. Its totient is φ = 934814592.

The previous prime is 2152021523. The next prime is 2152021549. The reversal of 2152021534 is 4351202512.

It is a junction number, because it is equal to n+sod(n) for n = 2152021499 and 2152021508.

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, 2433972 + ... + 2434855.

It is an arithmetic number, because the mean of its divisors is an integer number (230052123).

Almost surely, 2^2152021534 is an apocalyptic number.

2152021534 is a deficient number, since it is larger than the sum of its proper divisors (1528812434).

2152021534 is a wasteful number, since it uses less digits than its factorization.

2152021534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868859.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2152021534 is about 46389.8861175580. The cubic root of 2152021534 is about 1291.0672685163.

The spelling of 2152021534 in words is "two billion, one hundred fifty-two million, twenty-one thousand, five hundred thirty-four".