61800275 has 12 divisors (see below), whose sum is σ = 77338800. Its totient is φ = 48984480.

The previous prime is 61800257. The next prime is 61800301. The reversal of 61800275 is 57200816.

It is not a de Polignac number, because 61800275 - 2²² = 57605971 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8615 + ... + 14064.

It is an arithmetic number, because the mean of its divisors is an integer number (6444900).

Almost surely, 2^61800275 is an apocalyptic number.

61800275 is a deficient number, since it is larger than the sum of its proper divisors (15538525).

61800275 is a wasteful number, since it uses less digits than its factorization.

61800275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22798 (or 22793 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 61800275 is about 7861.3150935451. The cubic root of 61800275 is about 395.3637092237.

The spelling of 61800275 in words is "sixty-one million, eight hundred thousand, two hundred seventy-five".