266155550 has 24 divisors (see below), whose sum is σ = 496161696. Its totient is φ = 106223040.

The previous prime is 266155531. The next prime is 266155577. The reversal of 266155550 is 55551662.

It is a self number, because there is not a number n which added to its sum of digits gives 266155550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17402 + ... + 28898.

It is an arithmetic number, because the mean of its divisors is an integer number (20673404).

Almost surely, 2^266155550 is an apocalyptic number.

266155550 is a deficient number, since it is larger than the sum of its proper divisors (230006146).

266155550 is a wasteful number, since it uses less digits than its factorization.

266155550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11972 (or 11967 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 266155550 is about 16314.2744245645. The cubic root of 266155550 is about 643.2480952929.

The spelling of 266155550 in words is "two hundred sixty-six million, one hundred fifty-five thousand, five hundred fifty".