212557513 has 16 divisors (see below), whose sum is σ = 253935360. Its totient is φ = 173961216.

The previous prime is 212557493. The next prime is 212557517. The reversal of 212557513 is 315755212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212557513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212557517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150153 + ... + 151561.

It is an arithmetic number, because the mean of its divisors is an integer number (15870960).

Almost surely, 2^212557513 is an apocalyptic number.

212557513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212557513 is a deficient number, since it is larger than the sum of its proper divisors (41377847).

212557513 is a wasteful number, since it uses less digits than its factorization.

212557513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376.

The product of its digits is 10500, while the sum is 31.

The square root of 212557513 is about 14579.3522832806. The cubic root of 212557513 is about 596.7954270282.

The spelling of 212557513 in words is "two hundred twelve million, five hundred fifty-seven thousand, five hundred thirteen".