1205523054 has 64 divisors (see below), whose sum is σ = 2738940480. Its totient is φ = 392895360.

The previous prime is 1205523047. The next prime is 1205523073. The reversal of 1205523054 is 4503255021.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1135684 + ... + 1136744.

It is an arithmetic number, because the mean of its divisors is an integer number (42795945).

Almost surely, 2^1205523054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1205523054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1369470240).

1205523054 is an abundant number, since it is smaller than the sum of its proper divisors (1533417426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205523054 is a wasteful number, since it uses less digits than its factorization.

1205523054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1205523054 is about 34720.6430528007. The cubic root of 1205523054 is about 1064.2863856596.

Adding to 1205523054 its reverse (4503255021), we get a palindrome (5708778075).

The spelling of 1205523054 in words is "one billion, two hundred five million, five hundred twenty-three thousand, fifty-four".