103145551 has 2 divisors, whose sum is σ = 103145552. Its totient is φ = 103145550.

The previous prime is 103145531. The next prime is 103145557. The reversal of 103145551 is 155541301.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (155541301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103145551 - 2²¹ = 101048399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103145557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51572775 + 51572776.

It is an arithmetic number, because the mean of its divisors is an integer number (51572776).

Almost surely, 2^103145551 is an apocalyptic number.

103145551 is a deficient number, since it is larger than the sum of its proper divisors (1).

103145551 is an equidigital number, since it uses as much as digits as its factorization.

103145551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 103145551 is about 10156.0598166809. The cubic root of 103145551 is about 468.9755125626.

Adding to 103145551 its reverse (155541301), we get a palindrome (258686852).

The spelling of 103145551 in words is "one hundred three million, one hundred forty-five thousand, five hundred fifty-one".