611253243 has 16 divisors (see below), whose sum is σ = 906112800. Its totient is φ = 407253600.

The previous prime is 611253197. The next prime is 611253263. The reversal of 611253243 is 342352116.

611253243 is a `hidden beast` number, since 611 + 2 + 5 + 3 + 2 + 43 = 666.

It is not a de Polignac number, because 611253243 - 2⁶ = 611253179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (611253263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45373 + ... + 57281.

It is an arithmetic number, because the mean of its divisors is an integer number (56632050).

Almost surely, 2^611253243 is an apocalyptic number.

611253243 is a deficient number, since it is larger than the sum of its proper divisors (294859557).

611253243 is a wasteful number, since it uses less digits than its factorization.

611253243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13819 (or 13813 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 611253243 is about 24723.5362155174. The cubic root of 611253243 is about 848.6730127122.

The spelling of 611253243 in words is "six hundred eleven million, two hundred fifty-three thousand, two hundred forty-three".