212253745 has 16 divisors (see below), whose sum is σ = 286824960. Its totient is φ = 149385600.

The previous prime is 212253733. The next prime is 212253757. The reversal of 212253745 is 547352212.

212253745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212253733) and next prime (212253757).

It is not a de Polignac number, because 212253745 - 2²¹ = 210156593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 60540 + ... + 63949.

It is an arithmetic number, because the mean of its divisors is an integer number (17926560).

Almost surely, 2^212253745 is an apocalyptic number.

It is an amenable number.

212253745 is a deficient number, since it is larger than the sum of its proper divisors (74571215).

212253745 is a wasteful number, since it uses less digits than its factorization.

212253745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124536.

The product of its digits is 16800, while the sum is 31.

The square root of 212253745 is about 14568.9308118338. The cubic root of 212253745 is about 596.5109961163.

The spelling of 212253745 in words is "two hundred twelve million, two hundred fifty-three thousand, seven hundred forty-five".