102520973 has 2 divisors, whose sum is σ = 102520974. Its totient is φ = 102520972.

The previous prime is 102520939. The next prime is 102520991. The reversal of 102520973 is 379025201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74874409 + 27646564 = 8653^2 + 5258^2 .

It is an emirp because it is prime and its reverse (379025201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102520973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102520933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51260486 + 51260487.

It is an arithmetic number, because the mean of its divisors is an integer number (51260487).

Almost surely, 2^102520973 is an apocalyptic number.

It is an amenable number.

102520973 is a deficient number, since it is larger than the sum of its proper divisors (1).

102520973 is an equidigital number, since it uses as much as digits as its factorization.

102520973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 102520973 is about 10125.2640953212. The cubic root of 102520973 is about 468.0269985277.

The spelling of 102520973 in words is "one hundred two million, five hundred twenty thousand, nine hundred seventy-three".