101245489 has 4 divisors (see below), whose sum is σ = 107201124. Its totient is φ = 95289856.

The previous prime is 101245483. The next prime is 101245493. The reversal of 101245489 is 984542101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66341025 + 34904464 = 8145^2 + 5908^2 .

It is a cyclic number.

It is not a de Polignac number, because 101245489 - 2³ = 101245481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101245481) 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, 2977792 + ... + 2977825.

It is an arithmetic number, because the mean of its divisors is an integer number (26800281).

Almost surely, 2^101245489 is an apocalyptic number.

It is an amenable number.

101245489 is a deficient number, since it is larger than the sum of its proper divisors (5955635).

101245489 is an equidigital number, since it uses as much as digits as its factorization.

101245489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955634.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 101245489 is about 10062.0817428602. The cubic root of 101245489 is about 466.0779539504.

The spelling of 101245489 in words is "one hundred one million, two hundred forty-five thousand, four hundred eighty-nine".