1000253145 has 16 divisors (see below), whose sum is σ = 1602554112. Its totient is φ = 532752000.

The previous prime is 1000253129. The next prime is 1000253147. The reversal of 1000253145 is 5413520001.

It is not a de Polignac number, because 1000253145 - 2⁴ = 1000253129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000253147) 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, 33132 + ... + 55661.

It is an arithmetic number, because the mean of its divisors is an integer number (100159632).

Almost surely, 2^1000253145 is an apocalyptic number.

1000253145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000253145 is a deficient number, since it is larger than the sum of its proper divisors (602300967).

1000253145 is an equidigital number, since it uses as much as digits as its factorization.

1000253145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89552.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1000253145 is about 31626.7789222994. The cubic root of 1000253145 is about 1000.0843745474.

Adding to 1000253145 its reverse (5413520001), we get a palindrome (6413773146).

The spelling of 1000253145 in words is "one billion, two hundred fifty-three thousand, one hundred forty-five".