103154521 has 4 divisors (see below), whose sum is σ = 109222452. Its totient is φ = 97086592.

The previous prime is 103154503. The next prime is 103154533. The reversal of 103154521 is 125451301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74649600 + 28504921 = 8640^2 + 5339^2 .

It is not a de Polignac number, because 103154521 - 2⁷ = 103154393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103154492 and 103154501.

It is not an unprimeable number, because it can be changed into a prime (103154581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3033940 + ... + 3033973.

It is an arithmetic number, because the mean of its divisors is an integer number (27305613).

Almost surely, 2^103154521 is an apocalyptic number.

It is an amenable number.

103154521 is a deficient number, since it is larger than the sum of its proper divisors (6067931).

103154521 is an equidigital number, since it uses as much as digits as its factorization.

103154521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067930.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 103154521 is about 10156.5014153497. The cubic root of 103154521 is about 468.9891069069.

The spelling of 103154521 in words is "one hundred three million, one hundred fifty-four thousand, five hundred twenty-one".