266551401 has 8 divisors (see below), whose sum is σ = 355634944. Its totient is φ = 177584400.

The previous prime is 266551379. The next prime is 266551409. The reversal of 266551401 is 104155662.

266551401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266551401 - 2¹³ = 266543209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266551409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23650 + ... + 33051.

It is an arithmetic number, because the mean of its divisors is an integer number (44454368).

Almost surely, 2^266551401 is an apocalyptic number.

It is an amenable number.

266551401 is a deficient number, since it is larger than the sum of its proper divisors (89083543).

266551401 is a wasteful number, since it uses less digits than its factorization.

266551401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58271.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 266551401 is about 16326.4019612406. The cubic root of 266551401 is about 643.5668365571.

The spelling of 266551401 in words is "two hundred sixty-six million, five hundred fifty-one thousand, four hundred one".