213555141 has 6 divisors (see below), whose sum is σ = 308468550. Its totient is φ = 142370088.

The previous prime is 213555137. The next prime is 213555151. The reversal of 213555141 is 141555312.

It can be written as a sum of positive squares in only one way, i.e., 213452100 + 103041 = 14610^2 + 321^2 .

It is not a de Polignac number, because 213555141 - 2² = 213555137 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213555151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11864166 + ... + 11864183.

It is an arithmetic number, because the mean of its divisors is an integer number (51411425).

Almost surely, 2^213555141 is an apocalyptic number.

It is an amenable number.

213555141 is a deficient number, since it is larger than the sum of its proper divisors (94913409).

213555141 is a wasteful number, since it uses less digits than its factorization.

213555141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23728355 (or 23728352 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 213555141 is about 14613.5259605613. The cubic root of 213555141 is about 597.7276465473.

The spelling of 213555141 in words is "two hundred thirteen million, five hundred fifty-five thousand, one hundred forty-one".