212056507 has 4 divisors (see below), whose sum is σ = 228368560. Its totient is φ = 195744456.

The previous prime is 212056499. The next prime is 212056529. The reversal of 212056507 is 705650212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212056507 - 2³ = 212056499 is a prime.

It is a super-2 number, since 2×212056507² = 89935924322082098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212056547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8156007 + ... + 8156032.

It is an arithmetic number, because the mean of its divisors is an integer number (57092140).

Almost surely, 2^212056507 is an apocalyptic number.

212056507 is a deficient number, since it is larger than the sum of its proper divisors (16312053).

212056507 is a wasteful number, since it uses less digits than its factorization.

212056507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16312052.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 212056507 is about 14562.1601076214. The cubic root of 212056507 is about 596.3261684415.

The spelling of 212056507 in words is "two hundred twelve million, fifty-six thousand, five hundred seven".