1144553250 has 32 divisors (see below), whose sum is σ = 2856806784. Its totient is φ = 305214000.

The previous prime is 1144553191. The next prime is 1144553251. The reversal of 1144553250 is 523554411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1144553251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762286 + ... + 763785.

It is an arithmetic number, because the mean of its divisors is an integer number (89275212).

Almost surely, 2^1144553250 is an apocalyptic number.

1144553250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1144553250 is an abundant number, since it is smaller than the sum of its proper divisors (1712253534).

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

1144553250 is a wasteful number, since it uses less digits than its factorization.

1144553250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526091 (or 1526081 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1144553250 is about 33831.2466515794. The cubic root of 1144553250 is about 1046.0328760413.

The spelling of 1144553250 in words is "one billion, one hundred forty-four million, five hundred fifty-three thousand, two hundred fifty".