61013512 has 32 divisors (see below), whose sum is σ = 131757120. Its totient is φ = 25945920.

The previous prime is 61013501. The next prime is 61013521. The reversal of 61013512 is 21531016.

61013512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61013512.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3178 + ... + 11494.

It is an arithmetic number, because the mean of its divisors is an integer number (4117410).

Almost surely, 2^61013512 is an apocalyptic number.

It is an amenable number.

61013512 is an abundant number, since it is smaller than the sum of its proper divisors (70743608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61013512 is a wasteful number, since it uses less digits than its factorization.

61013512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8461 (or 8457 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 61013512 is about 7811.1146451707. The cubic root of 61013512 is about 393.6787817108.

Adding to 61013512 its reverse (21531016), we get a palindrome (82544528).

The spelling of 61013512 in words is "sixty-one million, thirteen thousand, five hundred twelve".