212157583 has 16 divisors (see below), whose sum is σ = 239523840. Its totient is φ = 186170400.

The previous prime is 212157559. The next prime is 212157599. The reversal of 212157583 is 385751212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212157583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212157523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 230398 + ... + 231316.

It is an arithmetic number, because the mean of its divisors is an integer number (14970240).

Almost surely, 2^212157583 is an apocalyptic number.

212157583 is a deficient number, since it is larger than the sum of its proper divisors (27366257).

212157583 is a wasteful number, since it uses less digits than its factorization.

212157583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638.

The product of its digits is 16800, while the sum is 34.

The square root of 212157583 is about 14565.6301957725. The cubic root of 212157583 is about 596.4208989935.

The spelling of 212157583 in words is "two hundred twelve million, one hundred fifty-seven thousand, five hundred eighty-three".