61101013 has 4 divisors (see below), whose sum is σ = 61119180. Its totient is φ = 61082848.

The previous prime is 61101011. The next prime is 61101037. The reversal of 61101013 is 31010116.

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 48191364 + 12909649 = 6942^2 + 3593^2 .

It is a cyclic number.

It is not a de Polignac number, because 61101013 - 2¹ = 61101011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61100984 and 61101002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61101011) 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, 2398 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (15279795).

Almost surely, 2^61101013 is an apocalyptic number.

It is an amenable number.

61101013 is a deficient number, since it is larger than the sum of its proper divisors (18167).

61101013 is a wasteful number, since it uses less digits than its factorization.

61101013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18166.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 61101013 is about 7816.7136956652. The cubic root of 61101013 is about 393.8668866722.

Adding to 61101013 its reverse (31010116), we get a palindrome (92111129).

The spelling of 61101013 in words is "sixty-one million, one hundred one thousand, thirteen".