212765515 has 16 divisors (see below), whose sum is σ = 270385920. Its totient is φ = 160276320.

The previous prime is 212765507. The next prime is 212765519. The reversal of 212765515 is 515567212.

It is not a de Polignac number, because 212765515 - 2³ = 212765507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212765519) 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, 9160 + ... + 22570.

It is an arithmetic number, because the mean of its divisors is an integer number (16899120).

Almost surely, 2^212765515 is an apocalyptic number.

212765515 is a deficient number, since it is larger than the sum of its proper divisors (57620405).

212765515 is a wasteful number, since it uses less digits than its factorization.

212765515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13602.

The product of its digits is 21000, while the sum is 34.

The square root of 212765515 is about 14586.4839834691. The cubic root of 212765515 is about 596.9900318848.

The spelling of 212765515 in words is "two hundred twelve million, seven hundred sixty-five thousand, five hundred fifteen".