212457355 has 8 divisors (see below), whose sum is σ = 278126064. Its totient is φ = 154514400.

The previous prime is 212457319. The next prime is 212457359. The reversal of 212457355 is 553754212.

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

It is not a de Polignac number, because 212457355 - 2⁷ = 212457227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212457355.

It is not an unprimeable number, because it can be changed into a prime (212457359) 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, 1931376 + ... + 1931485.

It is an arithmetic number, because the mean of its divisors is an integer number (34765758).

Almost surely, 2^212457355 is an apocalyptic number.

212457355 is a deficient number, since it is larger than the sum of its proper divisors (65668709).

212457355 is a wasteful number, since it uses less digits than its factorization.

212457355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862877.

The product of its digits is 42000, while the sum is 34.

The square root of 212457355 is about 14575.9169522881. The cubic root of 212457355 is about 596.7016747905.

The spelling of 212457355 in words is "two hundred twelve million, four hundred fifty-seven thousand, three hundred fifty-five".