1097548121 has 4 divisors (see below), whose sum is σ = 1108204032. Its totient is φ = 1086892212.

The previous prime is 1097548099. The next prime is 1097548159. The reversal of 1097548121 is 1218457901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1218457901 = 17333 ⋅70297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097548121 is a prime.

It is a super-2 number, since 2×1097548121² = 2409223755821261282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1097548421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5327801 + ... + 5328006.

It is an arithmetic number, because the mean of its divisors is an integer number (277051008).

Almost surely, 2^1097548121 is an apocalyptic number.

It is an amenable number.

1097548121 is a deficient number, since it is larger than the sum of its proper divisors (10655911).

1097548121 is a wasteful number, since it uses less digits than its factorization.

1097548121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655910.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1097548121 is about 33129.2638161490. The cubic root of 1097548121 is about 1031.5125673335.

The spelling of 1097548121 in words is "one billion, ninety-seven million, five hundred forty-eight thousand, one hundred twenty-one".