1045621655 has 32 divisors (see below), whose sum is σ = 1374408000. Its totient is φ = 759048192.

The previous prime is 1045621649. The next prime is 1045621663. The reversal of 1045621655 is 5561265401.

It is a cyclic number.

It is not a de Polignac number, because 1045621655 - 2⁸ = 1045621399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1035791 + ... + 1036799.

It is an arithmetic number, because the mean of its divisors is an integer number (42950250).

Almost surely, 2^1045621655 is an apocalyptic number.

1045621655 is a deficient number, since it is larger than the sum of its proper divisors (328786345).

1045621655 is a wasteful number, since it uses less digits than its factorization.

1045621655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 1045621655 is about 32336.0735866308. The cubic root of 1045621655 is about 1014.9816476900.

The spelling of 1045621655 in words is "one billion, forty-five million, six hundred twenty-one thousand, six hundred fifty-five".