103521057 has 4 divisors (see below), whose sum is σ = 138028080. Its totient is φ = 69014036.

The previous prime is 103521037. The next prime is 103521083. The reversal of 103521057 is 750125301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103521057 - 2⁶ = 103520993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103521037) 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 3 ways as a sum of consecutive naturals, for example, 17253507 + ... + 17253512.

It is an arithmetic number, because the mean of its divisors is an integer number (34507020).

Almost surely, 2^103521057 is an apocalyptic number.

It is an amenable number.

103521057 is a deficient number, since it is larger than the sum of its proper divisors (34507023).

103521057 is an equidigital number, since it uses as much as digits as its factorization.

103521057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34507022.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 103521057 is about 10174.5298171463. The cubic root of 103521057 is about 469.5439321228.

Adding to 103521057 its reverse (750125301), we get a palindrome (853646358).

The spelling of 103521057 in words is "one hundred three million, five hundred twenty-one thousand, fifty-seven".