146725521 has 8 divisors (see below), whose sum is σ = 207141984. Its totient is φ = 92063040.

The previous prime is 146725519. The next prime is 146725531. The reversal of 146725521 is 125527641.

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

It is not a de Polignac number, because 146725521 - 2¹ = 146725519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146725531) 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, 1438435 + ... + 1438536.

It is an arithmetic number, because the mean of its divisors is an integer number (25892748).

Almost surely, 2^146725521 is an apocalyptic number.

It is an amenable number.

146725521 is a deficient number, since it is larger than the sum of its proper divisors (60416463).

146725521 is a wasteful number, since it uses less digits than its factorization.

146725521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876991.

The product of its digits is 16800, while the sum is 33.

The square root of 146725521 is about 12113.0310409905. The cubic root of 146725521 is about 527.4345235921.

The spelling of 146725521 in words is "one hundred forty-six million, seven hundred twenty-five thousand, five hundred twenty-one".