46511821 has 4 divisors (see below), whose sum is σ = 46525500. Its totient is φ = 46498144.

The previous prime is 46511809. The next prime is 46511827. The reversal of 46511821 is 12811564.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33802596 + 12709225 = 5814^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 46511821 - 2¹³ = 46503629 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 46511821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46511827) 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, 2655 + ... + 10003.

It is an arithmetic number, because the mean of its divisors is an integer number (11631375).

Almost surely, 2^46511821 is an apocalyptic number.

It is an amenable number.

46511821 is a deficient number, since it is larger than the sum of its proper divisors (13679).

46511821 is an equidigital number, since it uses as much as digits as its factorization.

46511821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13678.

The product of its digits is 1920, while the sum is 28.

The square root of 46511821 is about 6819.9575511875. The cubic root of 46511821 is about 359.6287865942.

The spelling of 46511821 in words is "forty-six million, five hundred eleven thousand, eight hundred twenty-one".