61151105 has 4 divisors (see below), whose sum is σ = 73381332. Its totient is φ = 48920880.

The previous prime is 61151059. The next prime is 61151107. The reversal of 61151105 is 50115116.

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 30426256 + 30724849 = 5516^2 + 5543^2 .

It is not a de Polignac number, because 61151105 - 2¹⁰ = 61150081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61151107) 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, 6115106 + ... + 6115115.

It is an arithmetic number, because the mean of its divisors is an integer number (18345333).

Almost surely, 2^61151105 is an apocalyptic number.

It is an amenable number.

61151105 is a deficient number, since it is larger than the sum of its proper divisors (12230227).

61151105 is a wasteful number, since it uses less digits than its factorization.

61151105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12230226.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 61151105 is about 7819.9171990501. The cubic root of 61151105 is about 393.9744909490.

The spelling of 61151105 in words is "sixty-one million, one hundred fifty-one thousand, one hundred five".