212957 has 8 divisors (see below), whose sum is σ = 228096. Its totient is φ = 198352.

The previous prime is 212923. The next prime is 212969. The reversal of 212957 is 759212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212957 - 2⁸ = 212701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (28512).

2²¹²⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

212957 is a deficient number, since it is larger than the sum of its proper divisors (15139).

212957 is a wasteful number, since it uses less digits than its factorization.

212957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267.

The product of its digits is 1260, while the sum is 26.

The square root of 212957 is about 461.4726427428. The cubic root of 212957 is about 59.7169071487.

The spelling of 212957 in words is "two hundred twelve thousand, nine hundred fifty-seven".