212164546 has 24 divisors (see below), whose sum is σ = 351051372. Its totient is φ = 96096000.

The previous prime is 212164529. The next prime is 212164559. The reversal of 212164546 is 645461212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 187553025 + 24611521 = 13695^2 + 4961^2 .

It is a super-2 number, since 2×212164546² = 90027589158772232, which contains 22 as substring.

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, 74346 + ... + 77146.

Almost surely, 2^212164546 is an apocalyptic number.

212164546 is a deficient number, since it is larger than the sum of its proper divisors (138886826).

212164546 is a wasteful number, since it uses less digits than its factorization.

212164546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138 (or 3127 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 212164546 is about 14565.8692153953. The cubic root of 212164546 is about 596.4274237556.

The spelling of 212164546 in words is "two hundred twelve million, one hundred sixty-four thousand, five hundred forty-six".