1045507621 has 8 divisors (see below), whose sum is σ = 1068205824. Its totient is φ = 1022828400.

The previous prime is 1045507607. The next prime is 1045507637. The reversal of 1045507621 is 1267055401.

1045507621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1045507621 - 2⁹ = 1045507109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045507601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208696 + ... + 213646.

It is an arithmetic number, because the mean of its divisors is an integer number (133525728).

Almost surely, 2^1045507621 is an apocalyptic number.

It is an amenable number.

1045507621 is a deficient number, since it is larger than the sum of its proper divisors (22698203).

1045507621 is an equidigital number, since it uses as much as digits as its factorization.

1045507621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1045507621 is about 32334.3102756190. The cubic root of 1045507621 is about 1014.9447488671.

The spelling of 1045507621 in words is "one billion, forty-five million, five hundred seven thousand, six hundred twenty-one".