1065532251 has 16 divisors (see below), whose sum is σ = 1626530048. Its totient is φ = 607802400.

The previous prime is 1065532243. The next prime is 1065532277. The reversal of 1065532251 is 1522355601.

It is a happy number.

It is not a de Polignac number, because 1065532251 - 2³ = 1065532243 is a prime.

It is a super-2 number, since 2×1065532251² = 2270717955842254002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065532211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 32440 + ... + 56421.

It is an arithmetic number, because the mean of its divisors is an integer number (101658128).

Almost surely, 2^1065532251 is an apocalyptic number.

1065532251 is a deficient number, since it is larger than the sum of its proper divisors (560997797).

1065532251 is an equidigital number, since it uses as much as digits as its factorization.

1065532251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89442.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1065532251 is about 32642.4914949824. The cubic root of 1065532251 is about 1021.3835674482.

Adding to 1065532251 its reverse (1522355601), we get a palindrome (2587887852).

The spelling of 1065532251 in words is "one billion, sixty-five million, five hundred thirty-two thousand, two hundred fifty-one".