61612101 has 18 divisors (see below), whose sum is σ = 93040038. Its totient is φ = 39285840.

The previous prime is 61612099. The next prime is 61612123. The reversal of 61612101 is 10121616.

It can be written as a sum of positive squares in only one way, i.e., 57608100 + 4004001 = 7590^2 + 2001^2 .

It is not a de Polignac number, because 61612101 - 2¹ = 61612099 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61612151) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1710 + ... + 11231.

It is an arithmetic number, because the mean of its divisors is an integer number (5168891).

Almost surely, 2^61612101 is an apocalyptic number.

It is an amenable number.

61612101 is a deficient number, since it is larger than the sum of its proper divisors (31427937).

61612101 is a wasteful number, since it uses less digits than its factorization.

61612101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12993 (or 12967 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 61612101 is about 7849.3376153660. The cubic root of 61612101 is about 394.9620238019.

Adding to 61612101 its reverse (10121616), we get a palindrome (71733717).

The spelling of 61612101 in words is "sixty-one million, six hundred twelve thousand, one hundred one".