1021544045 has 8 divisors (see below), whose sum is σ = 1231351296. Its totient is φ = 813569616.

The previous prime is 1021544033. The next prime is 1021544081. The reversal of 1021544045 is 5404451201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021544045 - 2⁶ = 1021543981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 456977 + ... + 459206.

It is an arithmetic number, because the mean of its divisors is an integer number (153918912).

Almost surely, 2^1021544045 is an apocalyptic number.

It is an amenable number.

1021544045 is a deficient number, since it is larger than the sum of its proper divisors (209807251).

1021544045 is an equidigital number, since it uses as much as digits as its factorization.

1021544045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916411.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1021544045 is about 31961.6026663245. The cubic root of 1021544045 is about 1007.1303850997.

Adding to 1021544045 its reverse (5404451201), we get a palindrome (6425995246).

The spelling of 1021544045 in words is "one billion, twenty-one million, five hundred forty-four thousand, forty-five".