611540255 has 32 divisors (see below), whose sum is σ = 805040640. Its totient is φ = 444648960.

The previous prime is 611540231. The next prime is 611540257. The reversal of 611540255 is 552045116.

It is a happy number.

611540255 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 611540255 - 2⁶ = 611540191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611540257) 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 31 ways as a sum of consecutive naturals, for example, 164477 + ... + 168153.

It is an arithmetic number, because the mean of its divisors is an integer number (25157520).

Almost surely, 2^611540255 is an apocalyptic number.

611540255 is a deficient number, since it is larger than the sum of its proper divisors (193500385).

611540255 is a wasteful number, since it uses less digits than its factorization.

611540255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 611540255 is about 24729.3399628862. The cubic root of 611540255 is about 848.8058224914.

The spelling of 611540255 in words is "six hundred eleven million, five hundred forty thousand, two hundred fifty-five".