213480551 has 4 divisors (see below), whose sum is σ = 213819504. Its totient is φ = 213141600.

The previous prime is 213480517. The next prime is 213480557. The reversal of 213480551 is 155084312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213480551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213480557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168530 + ... + 169791.

It is an arithmetic number, because the mean of its divisors is an integer number (53454876).

Almost surely, 2^213480551 is an apocalyptic number.

213480551 is a deficient number, since it is larger than the sum of its proper divisors (338953).

213480551 is an equidigital number, since it uses as much as digits as its factorization.

213480551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338952.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 213480551 is about 14610.9736499660. The cubic root of 213480551 is about 597.6580475096.

The spelling of 213480551 in words is "two hundred thirteen million, four hundred eighty thousand, five hundred fifty-one".