611532401 has 4 divisors (see below), whose sum is σ = 617142900. Its totient is φ = 605921904.

The previous prime is 611532377. The next prime is 611532403. The reversal of 611532401 is 104235116.

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 398401600 + 213130801 = 19960^2 + 14599^2 .

It is a cyclic number.

It is not a de Polignac number, because 611532401 - 2¹⁰ = 611531377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611532403) 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, 2805086 + ... + 2805303.

It is an arithmetic number, because the mean of its divisors is an integer number (154285725).

Almost surely, 2^611532401 is an apocalyptic number.

It is an amenable number.

611532401 is a deficient number, since it is larger than the sum of its proper divisors (5610499).

611532401 is a wasteful number, since it uses less digits than its factorization.

611532401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610498.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 611532401 is about 24729.1811631522. The cubic root of 611532401 is about 848.8021887435.

Adding to 611532401 its reverse (104235116), we get a palindrome (715767517).

The spelling of 611532401 in words is "six hundred eleven million, five hundred thirty-two thousand, four hundred one".