103525021 has 4 divisors (see below), whose sum is σ = 103823712. Its totient is φ = 103226332.

The previous prime is 103525013. The next prime is 103525043. The reversal of 103525021 is 120525301.

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 103525021 - 2³ = 103525013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103525021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103525061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148825 + ... + 149518.

It is an arithmetic number, because the mean of its divisors is an integer number (25955928).

Almost surely, 2^103525021 is an apocalyptic number.

It is an amenable number.

103525021 is a deficient number, since it is larger than the sum of its proper divisors (298691).

103525021 is an equidigital number, since it uses as much as digits as its factorization.

103525021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298690.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 103525021 is about 10174.7246154380. The cubic root of 103525021 is about 469.5499252623.

The spelling of 103525021 in words is "one hundred three million, five hundred twenty-five thousand, twenty-one".