61102939 has 4 divisors (see below), whose sum is σ = 61124256. Its totient is φ = 61081624.

The previous prime is 61102897. The next prime is 61103017. The reversal of 61102939 is 93920116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61102939 - 2⁹ = 61102427 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61102939.

It is not an unprimeable number, because it can be changed into a prime (61102039) 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, 5539 + ... + 12364.

It is an arithmetic number, because the mean of its divisors is an integer number (15281064).

Almost surely, 2^61102939 is an apocalyptic number.

61102939 is a deficient number, since it is larger than the sum of its proper divisors (21317).

61102939 is a wasteful number, since it uses less digits than its factorization.

61102939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21316.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 61102939 is about 7816.8368922474. The cubic root of 61102939 is about 393.8710250632.

The spelling of 61102939 in words is "sixty-one million, one hundred two thousand, nine hundred thirty-nine".