1153550111 has 6 divisors (see below), whose sum is σ = 1341884880. Its totient is φ = 988757196.

The previous prime is 1153550089. The next prime is 1153550117. The reversal of 1153550111 is 1110553511.

It is a de Polignac number, because none of the positive numbers 2^k-1153550111 is a prime.

It is a super-2 number, since 2×1153550111² = 2661355717176224642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153550117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11770871 + ... + 11770968.

It is an arithmetic number, because the mean of its divisors is an integer number (223647480).

Almost surely, 2^1153550111 is an apocalyptic number.

1153550111 is a deficient number, since it is larger than the sum of its proper divisors (188334769).

1153550111 is an equidigital number, since it uses as much as digits as its factorization.

1153550111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23541853 (or 23541846 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 23.

The square root of 1153550111 is about 33963.9531120863. The cubic root of 1153550111 is about 1048.7665367702.

The spelling of 1153550111 in words is "one billion, one hundred fifty-three million, five hundred fifty thousand, one hundred eleven".