102550397 has 2 divisors, whose sum is σ = 102550398. Its totient is φ = 102550396.

The previous prime is 102550373. The next prime is 102550417. The reversal of 102550397 is 793055201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84750436 + 17799961 = 9206^2 + 4219^2 .

It is an emirp because it is prime and its reverse (793055201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102550397 - 2¹⁶ = 102484861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102550367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51275198 + 51275199.

It is an arithmetic number, because the mean of its divisors is an integer number (51275199).

Almost surely, 2^102550397 is an apocalyptic number.

It is an amenable number.

102550397 is a deficient number, since it is larger than the sum of its proper divisors (1).

102550397 is an equidigital number, since it uses as much as digits as its factorization.

102550397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 102550397 is about 10126.7169902195. The cubic root of 102550397 is about 468.0717695592.

The spelling of 102550397 in words is "one hundred two million, five hundred fifty thousand, three hundred ninety-seven".