1122551440 has 20 divisors (see below), whose sum is σ = 2609932284. Its totient is φ = 449020544.

The previous prime is 1122551389. The next prime is 1122551477. The reversal of 1122551440 is 441552211.

It can be written as a sum of positive squares in 2 ways, for example, as 288728064 + 833823376 = 16992^2 + 28876^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7015867 + ... + 7016026.

Almost surely, 2^1122551440 is an apocalyptic number.

1122551440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122551440 is an abundant number, since it is smaller than the sum of its proper divisors (1487380844).

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

1122551440 is a wasteful number, since it uses less digits than its factorization.

1122551440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14031906 (or 14031900 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1122551440 is about 33504.4988023997. The cubic root of 1122551440 is about 1039.2868138014.

It can be divided in two parts, 112 and 2551440, that added together give a palindrome (2551552).

The spelling of 1122551440 in words is "one billion, one hundred twenty-two million, five hundred fifty-one thousand, four hundred forty".