46509521 has 2 divisors, whose sum is σ = 46509522. Its totient is φ = 46509520.

The previous prime is 46509503. The next prime is 46509553. The reversal of 46509521 is 12590564.

It is a happy number.

It is an a-pointer prime, because the next prime (46509553) can be obtained adding 46509521 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25897921 + 20611600 = 5089^2 + 4540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46509521 is a prime.

It is equal to p_2803892 and since 46509521 and 2803892 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (46509581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23254760 + 23254761.

It is an arithmetic number, because the mean of its divisors is an integer number (23254761).

Almost surely, 2^46509521 is an apocalyptic number.

It is an amenable number.

46509521 is a deficient number, since it is larger than the sum of its proper divisors (1).

46509521 is an equidigital number, since it uses as much as digits as its factorization.

46509521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 46509521 is about 6819.7889263525. The cubic root of 46509521 is about 359.6228586399.

The spelling of 46509521 in words is "forty-six million, five hundred nine thousand, five hundred twenty-one".