213520355 has 8 divisors (see below), whose sum is σ = 257759712. Its totient is φ = 169792768.

The previous prime is 213520337. The next prime is 213520361. The reversal of 213520355 is 553025312.

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

It is a cyclic number.

It is not a de Polignac number, because 213520355 - 2⁶ = 213520291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127022 + ... + 128691.

It is an arithmetic number, because the mean of its divisors is an integer number (32219964).

Almost surely, 2^213520355 is an apocalyptic number.

213520355 is a deficient number, since it is larger than the sum of its proper divisors (44239357).

213520355 is a wasteful number, since it uses less digits than its factorization.

213520355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255885.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 213520355 is about 14612.3357133622. The cubic root of 213520355 is about 597.6951901633.

Adding to 213520355 its reverse (553025312), we get a palindrome (766545667).

The spelling of 213520355 in words is "two hundred thirteen million, five hundred twenty thousand, three hundred fifty-five".