1097808550 has 24 divisors (see below), whose sum is σ = 2043675000. Its totient is φ = 438746880.

The previous prime is 1097808539. The next prime is 1097808553. The reversal of 1097808550 is 558087901.

It is a super-2 number, since 2×1097808550² = 2410367224906205000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1097808497 and 1097808506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097808553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53661 + ... + 71239.

It is an arithmetic number, because the mean of its divisors is an integer number (85153125).

Almost surely, 2^1097808550 is an apocalyptic number.

1097808550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1097808550 is a deficient number, since it is larger than the sum of its proper divisors (945866450).

1097808550 is a wasteful number, since it uses less digits than its factorization.

1097808550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18840 (or 18835 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 1097808550 is about 33133.1940808610. The cubic root of 1097808550 is about 1031.5941475201.

The spelling of 1097808550 in words is "one billion, ninety-seven million, eight hundred eight thousand, five hundred fifty".