1205531455 has 16 divisors (see below), whose sum is σ = 1546910784. Its totient is φ = 898700800.

The previous prime is 1205531449. The next prime is 1205531491. The reversal of 1205531455 is 5541355021.

1205531455 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 1205531455 - 2²¹ = 1203434303 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61627 + ... + 78796.

It is an arithmetic number, because the mean of its divisors is an integer number (96681924).

Almost surely, 2^1205531455 is an apocalyptic number.

1205531455 is a deficient number, since it is larger than the sum of its proper divisors (341379329).

1205531455 is a wasteful number, since it uses less digits than its factorization.

1205531455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140546.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1205531455 is about 34720.7640324921. The cubic root of 1205531455 is about 1064.2888579057.

Adding to 1205531455 its reverse (5541355021), we get a palindrome (6746886476).

The spelling of 1205531455 in words is "one billion, two hundred five million, five hundred thirty-one thousand, four hundred fifty-five".