101513561 has 24 divisors (see below), whose sum is σ = 113531904. Its totient is φ = 90616320.

The previous prime is 101513557. The next prime is 101513569. The reversal of 101513561 is 165315101.

It is not a de Polignac number, because 101513561 - 2² = 101513557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101513569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525881 + ... + 526073.

It is an arithmetic number, because the mean of its divisors is an integer number (4730496).

Almost surely, 2^101513561 is an apocalyptic number.

It is an amenable number.

101513561 is a deficient number, since it is larger than the sum of its proper divisors (12018343).

101513561 is a wasteful number, since it uses less digits than its factorization.

101513561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 101513561 is about 10075.3938384561. The cubic root of 101513561 is about 466.4889429258.

Adding to 101513561 its reverse (165315101), we get a palindrome (266828662).

The spelling of 101513561 in words is "one hundred one million, five hundred thirteen thousand, five hundred sixty-one".