213505501 has 8 divisors (see below), whose sum is σ = 233054784. Its totient is φ = 193979520.

The previous prime is 213505493. The next prime is 213505541. The reversal of 213505501 is 105505312.

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 213505501 - 2³ = 213505493 is a prime.

It is a super-2 number, since 2×213505501² = 91169197914522002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213505541) 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, 17376 + ... + 26998.

It is an arithmetic number, because the mean of its divisors is an integer number (29131848).

Almost surely, 2^213505501 is an apocalyptic number.

It is an amenable number.

213505501 is a deficient number, since it is larger than the sum of its proper divisors (19549283).

213505501 is a wasteful number, since it uses less digits than its factorization.

213505501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11651.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 213505501 is about 14611.8274353347. The cubic root of 213505501 is about 597.6813298607.

The spelling of 213505501 in words is "two hundred thirteen million, five hundred five thousand, five hundred one".