213261545 has 8 divisors (see below), whose sum is σ = 292473024. Its totient is φ = 146236464.

The previous prime is 213261523. The next prime is 213261547. The reversal of 213261545 is 545162312.

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 213261545 - 2⁸ = 213261289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213261547) 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, 3046559 + ... + 3046628.

It is an arithmetic number, because the mean of its divisors is an integer number (36559128).

Almost surely, 2^213261545 is an apocalyptic number.

It is an amenable number.

213261545 is a deficient number, since it is larger than the sum of its proper divisors (79211479).

213261545 is an equidigital number, since it uses as much as digits as its factorization.

213261545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093199.

The product of its digits is 7200, while the sum is 29.

The square root of 213261545 is about 14603.4771544314. The cubic root of 213261545 is about 597.4536019012.

The spelling of 213261545 in words is "two hundred thirteen million, two hundred sixty-one thousand, five hundred forty-five".