61500050 has 24 divisors (see below), whose sum is σ = 121120596. Its totient is φ = 23152640.

The previous prime is 61499993. The next prime is 61500059. The reversal of 61500050 is 5000516.

61500050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 48762289 + 12737761 = 6983^2 + 3569^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (61500059) 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, 35327 + ... + 37026.

Almost surely, 2^61500050 is an apocalyptic number.

61500050 is a deficient number, since it is larger than the sum of its proper divisors (59620546).

61500050 is a wasteful number, since it uses less digits than its factorization.

61500050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72382 (or 72377 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 61500050 is about 7842.1967585620. The cubic root of 61500050 is about 394.7224456192.

Adding to 61500050 its reverse (5000516), we get a palindrome (66500566).

The spelling of 61500050 in words is "sixty-one million, five hundred thousand, fifty".