1065028251 has 16 divisors (see below), whose sum is σ = 1626420224. Its totient is φ = 607267584.

The previous prime is 1065028249. The next prime is 1065028267. The reversal of 1065028251 is 1528205601.

It is not a de Polignac number, because 1065028251 - 2¹ = 1065028249 is a prime.

It is a super-2 number, since 2×1065028251² = 2268570350856238002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065028241) 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, 45046 + ... + 64491.

It is an arithmetic number, because the mean of its divisors is an integer number (101651264).

Almost surely, 2^1065028251 is an apocalyptic number.

1065028251 is a deficient number, since it is larger than the sum of its proper divisors (561391973).

1065028251 is a wasteful number, since it uses less digits than its factorization.

1065028251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110010.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1065028251 is about 32634.7705829227. The cubic root of 1065028251 is about 1021.2225028714. Note that the first 3 decimals are identical.

The spelling of 1065028251 in words is "one billion, sixty-five million, twenty-eight thousand, two hundred fifty-one".