266461251 has 16 divisors (see below), whose sum is σ = 420038400. Its totient is φ = 147012768.

The previous prime is 266461229. The next prime is 266461253. The reversal of 266461251 is 152164662.

266461251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266461251 - 2⁹ = 266460739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266461253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218161 + ... + 219378.

It is an arithmetic number, because the mean of its divisors is an integer number (26252400).

Almost surely, 2^266461251 is an apocalyptic number.

266461251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

266461251 is a deficient number, since it is larger than the sum of its proper divisors (153577149).

266461251 is a wasteful number, since it uses less digits than its factorization.

266461251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437578.

The product of its digits is 17280, while the sum is 33.

The square root of 266461251 is about 16323.6408622586. The cubic root of 266461251 is about 643.4942750774.

The spelling of 266461251 in words is "two hundred sixty-six million, four hundred sixty-one thousand, two hundred fifty-one".