611544253 has 4 divisors (see below), whose sum is σ = 611938080. Its totient is φ = 611150428.

The previous prime is 611544221. The next prime is 611544277. The reversal of 611544253 is 352445116.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611544253 - 2⁵ = 611544221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611554253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194575 + ... + 197692.

It is an arithmetic number, because the mean of its divisors is an integer number (152984520).

Almost surely, 2^611544253 is an apocalyptic number.

It is an amenable number.

611544253 is a deficient number, since it is larger than the sum of its proper divisors (393827).

611544253 is a wasteful number, since it uses less digits than its factorization.

611544253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393826.

The product of its digits is 14400, while the sum is 31.

The square root of 611544253 is about 24729.4207979079. The cubic root of 611544253 is about 848.8076722025.

Adding to 611544253 its reverse (352445116), we get a palindrome (963989369).

The spelling of 611544253 in words is "six hundred eleven million, five hundred forty-four thousand, two hundred fifty-three".