1152205450 has 48 divisors (see below), whose sum is σ = 2341234080. Its totient is φ = 418392000.

The previous prime is 1152205433. The next prime is 1152205451. The reversal of 1152205450 is 545022511.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1152205451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 643156 + ... + 644944.

It is an arithmetic number, because the mean of its divisors is an integer number (48775710).

Almost surely, 2^1152205450 is an apocalyptic number.

1152205450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1152205450 is an abundant number, since it is smaller than the sum of its proper divisors (1189028630).

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

1152205450 is a wasteful number, since it uses less digits than its factorization.

1152205450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1152205450 is about 33944.1519263628. The cubic root of 1152205450 is about 1048.3588724190.

Adding to 1152205450 its reverse (545022511), we get a palindrome (1697227961).

It can be divided in two parts, 1152 and 205450, that added together give a palindrome (206602).

The spelling of 1152205450 in words is "one billion, one hundred fifty-two million, two hundred five thousand, four hundred fifty".