102556147 has 8 divisors (see below), whose sum is σ = 103370960. Its totient is φ = 101744640.

The previous prime is 102556127. The next prime is 102556159. The reversal of 102556147 is 741655201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102556147 - 2¹⁹ = 102031859 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (102556117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132979 + ... + 133747.

It is an arithmetic number, because the mean of its divisors is an integer number (12921370).

Almost surely, 2^102556147 is an apocalyptic number.

102556147 is a deficient number, since it is larger than the sum of its proper divisors (814813).

102556147 is an equidigital number, since it uses as much as digits as its factorization.

102556147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 102556147 is about 10127.0008887133. Note that the first 3 decimals coincide. The cubic root of 102556147 is about 468.0805176559.

The spelling of 102556147 in words is "one hundred two million, five hundred fifty-six thousand, one hundred forty-seven".