101613561 has 16 divisors (see below), whose sum is σ = 157762944. Its totient is φ = 56968704.

The previous prime is 101613559. The next prime is 101613569. The reversal of 101613561 is 165316101.

It is not a de Polignac number, because 101613561 - 2¹ = 101613559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101613569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44536 + ... + 46761.

It is an arithmetic number, because the mean of its divisors is an integer number (9860184).

Almost surely, 2^101613561 is an apocalyptic number.

It is an amenable number.

101613561 is a deficient number, since it is larger than the sum of its proper divisors (56149383).

101613561 is an equidigital number, since it uses as much as digits as its factorization.

101613561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91360.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 101613561 is about 10080.3552020750. The cubic root of 101613561 is about 466.6420705291.

Adding to 101613561 its reverse (165316101), we get a palindrome (266929662).

The spelling of 101613561 in words is "one hundred one million, six hundred thirteen thousand, five hundred sixty-one".