1140455550 has 48 divisors (see below), whose sum is σ = 3045898800. Its totient is φ = 280727040.

The previous prime is 1140455543. The next prime is 1140455609. The reversal of 1140455550 is 555540411.

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

It is a congruent number.

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, 290475 + ... + 294374.

It is an arithmetic number, because the mean of its divisors is an integer number (63456225).

Almost surely, 2^1140455550 is an apocalyptic number.

1140455550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1140455550 is an abundant number, since it is smaller than the sum of its proper divisors (1905443250).

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

1140455550 is a wasteful number, since it uses less digits than its factorization.

1140455550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584877 (or 584872 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1140455550 is about 33770.6314717389. The cubic root of 1140455550 is about 1044.7830566954.

Adding to 1140455550 its reverse (555540411), we get a palindrome (1695995961).

The spelling of 1140455550 in words is "one billion, one hundred forty million, four hundred fifty-five thousand, five hundred fifty".