103553531 has 2 divisors, whose sum is σ = 103553532. Its totient is φ = 103553530.

The previous prime is 103553507. The next prime is 103553543. The reversal of 103553531 is 135355301.

It is a strong prime.

It is an emirp because it is prime and its reverse (135355301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103553531 is a prime.

It is a super-3 number, since 3×103553531³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103553531.

It is not a weakly prime, because it can be changed into another prime (103553501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51776765 + 51776766.

It is an arithmetic number, because the mean of its divisors is an integer number (51776766).

Almost surely, 2^103553531 is an apocalyptic number.

103553531 is a deficient number, since it is larger than the sum of its proper divisors (1).

103553531 is an equidigital number, since it uses as much as digits as its factorization.

103553531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 26.

The square root of 103553531 is about 10176.1255397130. The cubic root of 103553531 is about 469.5930247937.

The spelling of 103553531 in words is "one hundred three million, five hundred fifty-three thousand, five hundred thirty-one".