1153211456 has 28 divisors (see below), whose sum is σ = 2423018268. Its totient is φ = 542687232.

The previous prime is 1153211429. The next prime is 1153211459. The reversal of 1153211456 is 6541123511.

It can be written as a sum of positive squares in 2 ways, for example, as 568345600 + 584865856 = 23840^2 + 24184^2 .

It is not an unprimeable number, because it can be changed into a prime (1153211459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528881 + ... + 531056.

Almost surely, 2^1153211456 is an apocalyptic number.

1153211456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1153211456 is an abundant number, since it is smaller than the sum of its proper divisors (1269806812).

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

1153211456 is a wasteful number, since it uses less digits than its factorization.

1153211456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059966 (or 1059956 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 1153211456 is about 33958.9672398911. The cubic root of 1153211456 is about 1048.6638957173.

Adding to 1153211456 its reverse (6541123511), we get a palindrome (7694334967).

The spelling of 1153211456 in words is "one billion, one hundred fifty-three million, two hundred eleven thousand, four hundred fifty-six".