61103873 has 4 divisors (see below), whose sum is σ = 61122480. Its totient is φ = 61085268.

The previous prime is 61103851. The next prime is 61103897. The reversal of 61103873 is 37830116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61103873 - 2¹⁰ = 61102849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61103813) 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, 2915 + ... + 11432.

It is an arithmetic number, because the mean of its divisors is an integer number (15280620).

Almost surely, 2^61103873 is an apocalyptic number.

It is an amenable number.

61103873 is a deficient number, since it is larger than the sum of its proper divisors (18607).

61103873 is a wasteful number, since it uses less digits than its factorization.

61103873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18606.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 61103873 is about 7816.8966348545. The cubic root of 61103873 is about 393.8730319152.

Adding to 61103873 its reverse (37830116), we get a palindrome (98933989).

The spelling of 61103873 in words is "sixty-one million, one hundred three thousand, eight hundred seventy-three".