213400550 has 48 divisors (see below), whose sum is σ = 437329152. Its totient is φ = 76826400.

The previous prime is 213400549. The next prime is 213400573. The reversal of 213400550 is 55004312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54767 + ... + 58533.

It is an arithmetic number, because the mean of its divisors is an integer number (9111024).

Almost surely, 2^213400550 is an apocalyptic number.

213400550 is an abundant number, since it is smaller than the sum of its proper divisors (223928602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213400550 is a wasteful number, since it uses less digits than its factorization.

213400550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893 (or 3888 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 213400550 is about 14608.2356908697. The cubic root of 213400550 is about 597.5833815114.

Adding to 213400550 its reverse (55004312), we get a palindrome (268404862).

The spelling of 213400550 in words is "two hundred thirteen million, four hundred thousand, five hundred fifty".