104661251 has 4 divisors (see below), whose sum is σ = 104715912. Its totient is φ = 104606592.

The previous prime is 104661223. The next prime is 104661281. The reversal of 104661251 is 152166401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152166401 = 47 ⋅3237583.

It is a cyclic number.

It is not a de Polignac number, because 104661251 - 2⁶ = 104661187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104661251.

It is not an unprimeable number, because it can be changed into a prime (104661211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24350 + ... + 28323.

It is an arithmetic number, because the mean of its divisors is an integer number (26178978).

Almost surely, 2^104661251 is an apocalyptic number.

104661251 is a deficient number, since it is larger than the sum of its proper divisors (54661).

104661251 is an equidigital number, since it uses as much as digits as its factorization.

104661251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54660.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 104661251 is about 10230.4081541256. The cubic root of 104661251 is about 471.2615136485.

The spelling of 104661251 in words is "one hundred four million, six hundred sixty-one thousand, two hundred fifty-one".