102145451 has 2 divisors, whose sum is σ = 102145452. Its totient is φ = 102145450.

The previous prime is 102145331. The next prime is 102145457. The reversal of 102145451 is 154541201.

It is a strong prime.

It is an emirp because it is prime and its reverse (154541201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102145451 - 2²⁶ = 35036587 is a prime.

It is not a weakly prime, because it can be changed into another prime (102145457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51072725 + 51072726.

It is an arithmetic number, because the mean of its divisors is an integer number (51072726).

Almost surely, 2^102145451 is an apocalyptic number.

102145451 is a deficient number, since it is larger than the sum of its proper divisors (1).

102145451 is an equidigital number, since it uses as much as digits as its factorization.

102145451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 102145451 is about 10106.7032706021. The cubic root of 102145451 is about 467.4548571851.

Adding to 102145451 its reverse (154541201), we get a palindrome (256686652).

The spelling of 102145451 in words is "one hundred two million, one hundred forty-five thousand, four hundred fifty-one".