61350505 has 4 divisors (see below), whose sum is σ = 73620612. Its totient is φ = 49080400.

The previous prime is 61350503. The next prime is 61350511. The reversal of 61350505 is 50505316.

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 17539344 + 43811161 = 4188^2 + 6619^2 .

It is not a de Polignac number, because 61350505 - 2¹ = 61350503 is a prime.

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 61350505.

It is not an unprimeable number, because it can be changed into a prime (61350503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6135046 + ... + 6135055.

It is an arithmetic number, because the mean of its divisors is an integer number (18405153).

Almost surely, 2^61350505 is an apocalyptic number.

It is an amenable number.

61350505 is a deficient number, since it is larger than the sum of its proper divisors (12270107).

61350505 is a wasteful number, since it uses less digits than its factorization.

61350505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12270106.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 61350505 is about 7832.6563182614. The cubic root of 61350505 is about 394.4022470821.

The spelling of 61350505 in words is "sixty-one million, three hundred fifty thousand, five hundred five".