61147250 has 16 divisors (see below), whose sum is σ = 114468120. Its totient is φ = 24458800.

The previous prime is 61147241. The next prime is 61147253. The reversal of 61147250 is 5274116.

It can be written as a sum of positive squares in 4 ways, for example, as 33258289 + 27888961 = 5767^2 + 5281^2 .

It is not an unprimeable number, because it can be changed into a prime (61147253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122045 + ... + 122544.

Almost surely, 2^61147250 is an apocalyptic number.

61147250 is a deficient number, since it is larger than the sum of its proper divisors (53320870).

61147250 is a wasteful number, since it uses less digits than its factorization.

61147250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244606 (or 244596 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 61147250 is about 7819.6707091795. The cubic root of 61147250 is about 393.9662119840.

The spelling of 61147250 in words is "sixty-one million, one hundred forty-seven thousand, two hundred fifty".