1045555656 has 64 divisors (see below), whose sum is σ = 2661724800. Its totient is φ = 342182400.

The previous prime is 1045555649. The next prime is 1045555661. The reversal of 1045555656 is 6565555401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457236 + ... + 459516.

It is an arithmetic number, because the mean of its divisors is an integer number (41589450).

Almost surely, 2^1045555656 is an apocalyptic number.

It is an amenable number.

1045555656 is an abundant number, since it is smaller than the sum of its proper divisors (1616169144).

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

1045555656 is a wasteful number, since it uses less digits than its factorization.

1045555656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630 (or 2626 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

The square root of 1045555656 is about 32335.0530539228. The cubic root of 1045555656 is about 1014.9602922336.

The spelling of 1045555656 in words is "one billion, forty-five million, five hundred fifty-five thousand, six hundred fifty-six".