212874545 has 16 divisors (see below), whose sum is σ = 287062272. Its totient is φ = 150363840.

The previous prime is 212874533. The next prime is 212874589. The reversal of 212874545 is 545478212.

It is not a de Polignac number, because 212874545 - 2⁶ = 212874481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212874499 and 212874508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69701 + ... + 72690.

It is an arithmetic number, because the mean of its divisors is an integer number (17941392).

Almost surely, 2^212874545 is an apocalyptic number.

It is an amenable number.

212874545 is a deficient number, since it is larger than the sum of its proper divisors (74187727).

212874545 is a wasteful number, since it uses less digits than its factorization.

212874545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142432.

The product of its digits is 89600, while the sum is 38.

The square root of 212874545 is about 14590.2208687874. The cubic root of 212874545 is about 597.0919887394.

The spelling of 212874545 in words is "two hundred twelve million, eight hundred seventy-four thousand, five hundred forty-five".