162121564 has 36 divisors (see below), whose sum is σ = 314214264. Its totient is φ = 72580000.

The previous prime is 162121559. The next prime is 162121573. The reversal of 162121564 is 465121261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 848709 + ... + 848899.

It is an arithmetic number, because the mean of its divisors is an integer number (8728174).

Almost surely, 2^162121564 is an apocalyptic number.

It is an amenable number.

162121564 is a deficient number, since it is larger than the sum of its proper divisors (152092700).

162121564 is a wasteful number, since it uses less digits than its factorization.

162121564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 305 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 162121564 is about 12732.6966507492. The cubic root of 162121564 is about 545.2724995889.

The spelling of 162121564 in words is "one hundred sixty-two million, one hundred twenty-one thousand, five hundred sixty-four".