61953550 has 24 divisors (see below), whose sum is σ = 115535016. Its totient is φ = 24716640.

The previous prime is 61953539. The next prime is 61953557. The reversal of 61953550 is 5535916.

61953550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61953557) 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 11 ways as a sum of consecutive naturals, for example, 20752 + ... + 23548.

It is an arithmetic number, because the mean of its divisors is an integer number (4813959).

Almost surely, 2^61953550 is an apocalyptic number.

61953550 is a deficient number, since it is larger than the sum of its proper divisors (53581466).

61953550 is a wasteful number, since it uses less digits than its factorization.

61953550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 61953550 is about 7871.0577434040. The cubic root of 61953550 is about 395.6902953788.

The spelling of 61953550 in words is "sixty-one million, nine hundred fifty-three thousand, five hundred fifty".