1100401 has 3 divisors (see below), whose sum is σ = 1101451. Its totient is φ = 1099352.
The previous prime is 1100387. The next prime is 1100419. The reversal of 1100401 is 1040011.
It is a happy number.
The square root of 1100401 is 1049.
It is a perfect power (a square), and thus also a powerful number.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1040011 = 7 ⋅148573.
It can be written as a sum of positive squares in only one way, i.e., 998001 + 102400 = 999^2 + 320^2 .
It is not a de Polignac number, because 1100401 - 27 = 1100273 is a prime.
It is a Duffinian number.
1100401 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (1100441) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 525 + ... + 1573.
21100401 is an apocalyptic number.
1100401 is the 1049-th square number.
1100401 is the 525-th centered octagonal number.
It is an amenable number.
1100401 is a deficient number, since it is larger than the sum of its proper divisors (1050).
1100401 is an frugal number, since it uses more digits than its factorization.
1100401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2098 (or 1049 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 7.
The cubic root of 1100401 is about 103.2405537892.
Adding to 1100401 its reverse (1040011), we get a palindrome (2140412).
The spelling of 1100401 in words is "one million, one hundred thousand, four hundred one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.060 sec. • engine limits •