213775550 has 12 divisors (see below), whose sum is σ = 397622616. Its totient is φ = 85510200.

The previous prime is 213775543. The next prime is 213775567. The reversal of 213775550 is 55577312.

It is a self number, because there is not a number n which added to its sum of digits gives 213775550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2137706 + ... + 2137805.

It is an arithmetic number, because the mean of its divisors is an integer number (33135218).

Almost surely, 2^213775550 is an apocalyptic number.

213775550 is a deficient number, since it is larger than the sum of its proper divisors (183847066).

213775550 is a wasteful number, since it uses less digits than its factorization.

213775550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275523 (or 4275518 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 35.

The square root of 213775550 is about 14621.0652826666. The cubic root of 213775550 is about 597.9332129004.

The spelling of 213775550 in words is "two hundred thirteen million, seven hundred seventy-five thousand, five hundred fifty".