1145555450 has 48 divisors (see below), whose sum is σ = 2318419320. Its totient is φ = 418590720.

The previous prime is 1145555449. The next prime is 1145555471. The reversal of 1145555450 is 545555411.

It can be written as a sum of positive squares in 12 ways, for example, as 31798321 + 1113757129 = 5639^2 + 33373^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145555450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53966 + ... + 72134.

Almost surely, 2^1145555450 is an apocalyptic number.

1145555450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145555450 is an abundant number, since it is smaller than the sum of its proper divisors (1172863870).

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

1145555450 is a wasteful number, since it uses less digits than its factorization.

1145555450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18291 (or 18286 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 1145555450 is about 33846.0551615694. The cubic root of 1145555450 is about 1046.3380979883.

The spelling of 1145555450 in words is "one billion, one hundred forty-five million, five hundred fifty-five thousand, four hundred fifty".