46185821 has 12 divisors (see below), whose sum is σ = 53754876. Its totient is φ = 39515520.

The previous prime is 46185809. The next prime is 46185823. The reversal of 46185821 is 12858164.

It can be written as a sum of positive squares in 2 ways, for example, as 19456921 + 26728900 = 4411^2 + 5170^2 .

It is not a de Polignac number, because 46185821 - 2¹⁴ = 46169437 is a prime.

It is a super-2 number, since 2×46185821² = 4266260122888082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46185823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9170 + ... + 13283.

It is an arithmetic number, because the mean of its divisors is an integer number (4479573).

Almost surely, 2^46185821 is an apocalyptic number.

It is an amenable number.

46185821 is a deficient number, since it is larger than the sum of its proper divisors (7569055).

46185821 is a wasteful number, since it uses less digits than its factorization.

46185821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22492 (or 22481 counting only the distinct ones).

The product of its digits is 15360, while the sum is 35.

The square root of 46185821 is about 6796.0150823847. The cubic root of 46185821 is about 358.7866066803.

The spelling of 46185821 in words is "forty-six million, one hundred eighty-five thousand, eight hundred twenty-one".