145646541 has 18 divisors (see below), whose sum is σ = 216236202. Its totient is φ = 94465440.

The previous prime is 145646513. The next prime is 145646549.

145646541 is a `hidden beast` number, since 1 + 4 + 5 + 646 + 5 + 4 + 1 = 666.

145646541 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 52620516 + 93026025 = 7254^2 + 9645^2 .

It is not a de Polignac number, because 145646541 - 2¹⁰ = 145645517 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145646496 and 145646505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145646549) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6411 + ... + 18231.

Almost surely, 2^145646541 is an apocalyptic number.

It is an amenable number.

145646541 is a deficient number, since it is larger than the sum of its proper divisors (70589661).

145646541 is a wasteful number, since it uses less digits than its factorization.

145646541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11901 (or 11861 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 145646541 is about 12068.4108730189. The cubic root of 145646541 is about 526.1384709196.

The spelling of 145646541 in words is "one hundred forty-five million, six hundred forty-six thousand, five hundred forty-one".