46640521 has 4 divisors (see below), whose sum is σ = 46654672. Its totient is φ = 46626372.

The previous prime is 46640519. The next prime is 46640533. The reversal of 46640521 is 12504664.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 46640521 - 2¹ = 46640519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 46640521.

It is not an unprimeable number, because it can be changed into a prime (46640221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766 + ... + 9688.

It is an arithmetic number, because the mean of its divisors is an integer number (11663668).

Almost surely, 2^46640521 is an apocalyptic number.

It is an amenable number.

46640521 is a deficient number, since it is larger than the sum of its proper divisors (14151).

46640521 is an equidigital number, since it uses as much as digits as its factorization.

46640521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14150.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 46640521 is about 6829.3865756743. The cubic root of 46640521 is about 359.9601833536.

The spelling of 46640521 in words is "forty-six million, six hundred forty thousand, five hundred twenty-one".