1078557550 has 48 divisors (see below), whose sum is σ = 2316414240. Its totient is φ = 365967360.

The previous prime is 1078557547. The next prime is 1078557569. The reversal of 1078557550 is 557558701.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1078557497 and 1078557506.

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, 18066 + ... + 49834.

It is an arithmetic number, because the mean of its divisors is an integer number (48258630).

Almost surely, 2^1078557550 is an apocalyptic number.

1078557550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1078557550 is an abundant number, since it is smaller than the sum of its proper divisors (1237856690).

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

1078557550 is a wasteful number, since it uses less digits than its factorization.

1078557550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31885 (or 31880 counting only the distinct ones).

The product of its (nonzero) digits is 245000, while the sum is 43.

The square root of 1078557550 is about 32841.3999397102. The cubic root of 1078557550 is about 1025.5285950928.

The spelling of 1078557550 in words is "one billion, seventy-eight million, five hundred fifty-seven thousand, five hundred fifty".