611321455 has 4 divisors (see below), whose sum is σ = 733585752. Its totient is φ = 489057160.

The previous prime is 611321441. The next prime is 611321461. The reversal of 611321455 is 554123116.

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

It is not a de Polignac number, because 611321455 - 2⁷ = 611321327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61132141 + ... + 61132150.

It is an arithmetic number, because the mean of its divisors is an integer number (183396438).

Almost surely, 2^611321455 is an apocalyptic number.

611321455 is a deficient number, since it is larger than the sum of its proper divisors (122264297).

611321455 is a wasteful number, since it uses less digits than its factorization.

611321455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122264296.

The product of its digits is 3600, while the sum is 28.

The square root of 611321455 is about 24724.9156722526. The cubic root of 611321455 is about 848.7045803868.

The spelling of 611321455 in words is "six hundred eleven million, three hundred twenty-one thousand, four hundred fifty-five".