101030645 has 4 divisors (see below), whose sum is σ = 121236780. Its totient is φ = 80824512.

The previous prime is 101030639. The next prime is 101030647. The reversal of 101030645 is 546030101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546030101 = 67 ⋅8149703.

It can be written as a sum of positive squares in 2 ways, for example, as 56821444 + 44209201 = 7538^2 + 6649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101030645 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101030647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10103060 + ... + 10103069.

It is an arithmetic number, because the mean of its divisors is an integer number (30309195).

Almost surely, 2^101030645 is an apocalyptic number.

It is an amenable number.

101030645 is a deficient number, since it is larger than the sum of its proper divisors (20206135).

101030645 is an equidigital number, since it uses as much as digits as its factorization.

101030645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20206134.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 101030645 is about 10051.4001512227. The cubic root of 101030645 is about 465.7480463662.

Adding to 101030645 its reverse (546030101), we get a palindrome (647060746).

The spelling of 101030645 in words is "one hundred one million, thirty thousand, six hundred forty-five".