61042650 has 24 divisors (see below), whose sum is σ = 151386144. Its totient is φ = 16278000.

The previous prime is 61042643. The next prime is 61042691. The reversal of 61042650 is 5624016.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 61042650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203326 + ... + 203625.

It is an arithmetic number, because the mean of its divisors is an integer number (6307756).

Almost surely, 2^61042650 is an apocalyptic number.

61042650 is an abundant number, since it is smaller than the sum of its proper divisors (90343494).

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

61042650 is a wasteful number, since it uses less digits than its factorization.

61042650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406966 (or 406961 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61042650 is about 7812.9795852799. The cubic root of 61042650 is about 393.7414409830.

Adding to 61042650 its reverse (5624016), we get a palindrome (66666666).

The spelling of 61042650 in words is "sixty-one million, forty-two thousand, six hundred fifty".