1103553540 has 72 divisors (see below), whose sum is σ = 3429113688. Its totient is φ = 287101440.

The previous prime is 1103553533. The next prime is 1103553541. The reversal of 1103553540 is 453553011.

1103553540 is a `hidden beast` number, since 1 + 103 + 553 + 5 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 29942784 + 1073610756 = 5472^2 + 32766^2 .

It is not an unprimeable number, because it can be changed into a prime (1103553541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67387 + ... + 82146.

It is an arithmetic number, because the mean of its divisors is an integer number (47626579).

Almost surely, 2^1103553540 is an apocalyptic number.

1103553540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103553540 is an abundant number, since it is smaller than the sum of its proper divisors (2325560148).

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

1103553540 is a wasteful number, since it uses less digits than its factorization.

1103553540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149589 (or 149584 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1103553540 is about 33219.7763388016. The cubic root of 1103553540 is about 1033.3905111152.

The spelling of 1103553540 in words is "one billion, one hundred three million, five hundred fifty-three thousand, five hundred forty".