1121656554 has 24 divisors (see below), whose sum is σ = 2495939940. Its totient is φ = 363780288.

The previous prime is 1121656553. The next prime is 1121656567. The reversal of 1121656554 is 4556561211.

It can be written as a sum of positive squares in 2 ways, for example, as 1119906225 + 1750329 = 33465^2 + 1323^2 .

It is a super-2 number, since 2×1121656554² = 2516226850262309832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121656553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 841419 + ... + 842750.

Almost surely, 2^1121656554 is an apocalyptic number.

1121656554 is an abundant number, since it is smaller than the sum of its proper divisors (1374283386).

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

1121656554 is a wasteful number, since it uses less digits than its factorization.

1121656554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684214 (or 1684211 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 1121656554 is about 33491.1414257562. The cubic root of 1121656554 is about 1039.0105709389.

The spelling of 1121656554 in words is "one billion, one hundred twenty-one million, six hundred fifty-six thousand, five hundred fifty-four".