611133401 has 4 divisors (see below), whose sum is σ = 611479092. Its totient is φ = 610787712.

The previous prime is 611133379. The next prime is 611133421. The reversal of 611133401 is 104331116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 228735376 + 382398025 = 15124^2 + 19555^2 .

It is a cyclic number.

It is not a de Polignac number, because 611133401 - 2⁶ = 611133337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611133421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170180 + ... + 173733.

It is an arithmetic number, because the mean of its divisors is an integer number (152869773).

Almost surely, 2^611133401 is an apocalyptic number.

It is an amenable number.

611133401 is a deficient number, since it is larger than the sum of its proper divisors (345691).

611133401 is a wasteful number, since it uses less digits than its factorization.

611133401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345690.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 611133401 is about 24721.1124547420. The cubic root of 611133401 is about 848.6175456207.

Adding to 611133401 its reverse (104331116), we get a palindrome (715464517).

The spelling of 611133401 in words is "six hundred eleven million, one hundred thirty-three thousand, four hundred one".