1097159550 has 24 divisors (see below), whose sum is σ = 2720956056. Its totient is φ = 292575840.

The previous prime is 1097159509. The next prime is 1097159551. The reversal of 1097159550 is 559517901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097159551) 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, 3657049 + ... + 3657348.

It is an arithmetic number, because the mean of its divisors is an integer number (113373169).

Almost surely, 2^1097159550 is an apocalyptic number.

1097159550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1097159550 is an abundant number, since it is smaller than the sum of its proper divisors (1623796506).

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

1097159550 is a wasteful number, since it uses less digits than its factorization.

1097159550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7314412 (or 7314407 counting only the distinct ones).

The product of its (nonzero) digits is 70875, while the sum is 42.

The square root of 1097159550 is about 33123.3988292264. The cubic root of 1097159550 is about 1031.3908222751.

The spelling of 1097159550 in words is "one billion, ninety-seven million, one hundred fifty-nine thousand, five hundred fifty".