103553397 has 10 divisors (see below), whose sum is σ = 154690998. Its totient is φ = 69035544.

The previous prime is 103553389. The next prime is 103553407. The reversal of 103553397 is 793355301.

It is a happy number.

103553397 is a `hidden beast` number, since 1 + 0 + 35 + 533 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87441201 + 16112196 = 9351^2 + 4014^2 .

It is not a de Polignac number, because 103553397 - 2³ = 103553389 is a prime.

It is a super-3 number, since 3×103553397³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103553327) 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 in 9 ways as a sum of consecutive naturals, for example, 639138 + ... + 639299.

Almost surely, 2^103553397 is an apocalyptic number.

It is an amenable number.

103553397 is a deficient number, since it is larger than the sum of its proper divisors (51137601).

103553397 is an equidigital number, since it uses as much as digits as its factorization.

103553397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278449 (or 1278440 counting only the distinct ones).

The product of its (nonzero) digits is 42525, while the sum is 36.

The square root of 103553397 is about 10176.1189556726. The cubic root of 103553397 is about 469.5928222399.

The spelling of 103553397 in words is "one hundred three million, five hundred fifty-three thousand, three hundred ninety-seven".