146130521 has 8 divisors (see below), whose sum is σ = 154873800. Its totient is φ = 137403648.

The previous prime is 146130499. The next prime is 146130533. The reversal of 146130521 is 125031641.

146130521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 87684496 + 58446025 = 9364^2 + 7645^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146130521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146130541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17555 + ... + 24503.

It is an arithmetic number, because the mean of its divisors is an integer number (19359225).

Almost surely, 2^146130521 is an apocalyptic number.

It is an amenable number.

146130521 is a deficient number, since it is larger than the sum of its proper divisors (8743279).

146130521 is a wasteful number, since it uses less digits than its factorization.

146130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 146130521 is about 12088.4457644480. The cubic root of 146130521 is about 526.7206084703.

The spelling of 146130521 in words is "one hundred forty-six million, one hundred thirty thousand, five hundred twenty-one".