61103021 has 8 divisors (see below), whose sum is σ = 71719680. Its totient is φ = 50958288.

The previous prime is 61103017. The next prime is 61103027. The reversal of 61103021 is 12030116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61103021 - 2² = 61103017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61102987 and 61103005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61103027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117701 + ... + 118218.

It is an arithmetic number, because the mean of its divisors is an integer number (8964960).

Almost surely, 2^61103021 is an apocalyptic number.

It is an amenable number.

61103021 is a deficient number, since it is larger than the sum of its proper divisors (10616659).

61103021 is a wasteful number, since it uses less digits than its factorization.

61103021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235963.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 61103021 is about 7816.8421373340. The cubic root of 61103021 is about 393.8712012544.

Adding to 61103021 its reverse (12030116), we get a palindrome (73133137).

The spelling of 61103021 in words is "sixty-one million, one hundred three thousand, twenty-one".