1065721152 has 56 divisors (see below), whose sum is σ = 2848839616. Its totient is φ = 351571968.

The previous prime is 1065721141. The next prime is 1065721157. The reversal of 1065721152 is 2511275601.

1065721152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1065721152² = 2271523147640414208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065721157) 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, 9988 + ... + 47235.

It is an arithmetic number, because the mean of its divisors is an integer number (50872136).

Almost surely, 2^1065721152 is an apocalyptic number.

1065721152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1065721152 is an abundant number, since it is smaller than the sum of its proper divisors (1783118464).

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

1065721152 is an equidigital number, since it uses as much as digits as its factorization.

1065721152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57335 (or 57325 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 1065721152 is about 32645.3848499294. The cubic root of 1065721152 is about 1021.4439219413.

Adding to 1065721152 its reverse (2511275601), we get a palindrome (3576996753).

The spelling of 1065721152 in words is "one billion, sixty-five million, seven hundred twenty-one thousand, one hundred fifty-two".