61050513 has 4 divisors (see below), whose sum is σ = 81400688. Its totient is φ = 40700340.

The previous prime is 61050511. The next prime is 61050547. The reversal of 61050513 is 31505016.

It is a happy number.

61050513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 61050513 - 2¹ = 61050511 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 61050513.

It is not an unprimeable number, because it can be changed into a prime (61050511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10175083 + ... + 10175088.

It is an arithmetic number, because the mean of its divisors is an integer number (20350172).

Almost surely, 2^61050513 is an apocalyptic number.

It is an amenable number.

61050513 is a deficient number, since it is larger than the sum of its proper divisors (20350175).

61050513 is a wasteful number, since it uses less digits than its factorization.

61050513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20350174.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 61050513 is about 7813.4827701864. The cubic root of 61050513 is about 393.7583464091.

Adding to 61050513 its reverse (31505016), we get a palindrome (92555529).

The spelling of 61050513 in words is "sixty-one million, fifty thousand, five hundred thirteen".