102516947 has 4 divisors (see below), whose sum is σ = 110402880. Its totient is φ = 94631016.

The previous prime is 102516941. The next prime is 102516959. The reversal of 102516947 is 749615201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749615201 = 1657 ⋅452393.

It is a cyclic number.

It is not a de Polignac number, because 102516947 - 2¹⁰ = 102515923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102516941) 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, 3942947 + ... + 3942972.

It is an arithmetic number, because the mean of its divisors is an integer number (27600720).

Almost surely, 2^102516947 is an apocalyptic number.

102516947 is a deficient number, since it is larger than the sum of its proper divisors (7885933).

102516947 is an equidigital number, since it uses as much as digits as its factorization.

102516947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7885932.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 102516947 is about 10125.0652837401. The cubic root of 102516947 is about 468.0208719720.

The spelling of 102516947 in words is "one hundred two million, five hundred sixteen thousand, nine hundred forty-seven".