61501650 has 48 divisors (see below), whose sum is σ = 174316224. Its totient is φ = 14057280.

The previous prime is 61501639. The next prime is 61501667. The reversal of 61501650 is 5610516.

61501650 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 61501650.

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 23 ways as a sum of consecutive naturals, for example, 28237 + ... + 30336.

It is an arithmetic number, because the mean of its divisors is an integer number (3631588).

Almost surely, 2^61501650 is an apocalyptic number.

61501650 is an abundant number, since it is smaller than the sum of its proper divisors (112814574).

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

61501650 is a wasteful number, since it uses less digits than its factorization.

61501650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58595 (or 58590 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 61501650 is about 7842.2987701311. The cubic root of 61501650 is about 394.7258686540.

The spelling of 61501650 in words is "sixty-one million, five hundred one thousand, six hundred fifty".