102423551 has 2 divisors, whose sum is σ = 102423552. Its totient is φ = 102423550.

The previous prime is 102423533. The next prime is 102423557. The reversal of 102423551 is 155324201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102423551 - 2¹⁸ = 102161407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102423557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51211775 + 51211776.

It is an arithmetic number, because the mean of its divisors is an integer number (51211776).

Almost surely, 2^102423551 is an apocalyptic number.

102423551 is a deficient number, since it is larger than the sum of its proper divisors (1).

102423551 is an equidigital number, since it uses as much as digits as its factorization.

102423551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 102423551 is about 10120.4521144067. The cubic root of 102423551 is about 467.8787017928.

Adding to 102423551 its reverse (155324201), we get a palindrome (257747752).

The spelling of 102423551 in words is "one hundred two million, four hundred twenty-three thousand, five hundred fifty-one".