102501149 has 2 divisors, whose sum is σ = 102501150. Its totient is φ = 102501148.

The previous prime is 102501131. The next prime is 102501173. The reversal of 102501149 is 941105201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76562500 + 25938649 = 8750^2 + 5093^2 .

It is an emirp because it is prime and its reverse (941105201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102501149 - 2¹² = 102497053 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102501199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51250574 + 51250575.

It is an arithmetic number, because the mean of its divisors is an integer number (51250575).

Almost surely, 2^102501149 is an apocalyptic number.

It is an amenable number.

102501149 is a deficient number, since it is larger than the sum of its proper divisors (1).

102501149 is an equidigital number, since it uses as much as digits as its factorization.

102501149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 102501149 is about 10124.2851105646. The cubic root of 102501149 is about 467.9968298541.

The spelling of 102501149 in words is "one hundred two million, five hundred one thousand, one hundred forty-nine".