46645021 has 4 divisors (see below), whose sum is σ = 48253500. Its totient is φ = 45036544.

The previous prime is 46645013. The next prime is 46645031. The reversal of 46645021 is 12054664.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39564100 + 7080921 = 6290^2 + 2661^2 .

It is a cyclic number.

It is not a de Polignac number, because 46645021 - 2³ = 46645013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46645031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804196 + ... + 804253.

It is an arithmetic number, because the mean of its divisors is an integer number (12063375).

Almost surely, 2^46645021 is an apocalyptic number.

It is an amenable number.

46645021 is a deficient number, since it is larger than the sum of its proper divisors (1608479).

46645021 is a wasteful number, since it uses less digits than its factorization.

46645021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608478.

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

The square root of 46645021 is about 6829.7160263074. The cubic root of 46645021 is about 359.9717596160.

Adding to 46645021 its reverse (12054664), we get a palindrome (58699685).

The spelling of 46645021 in words is "forty-six million, six hundred forty-five thousand, twenty-one".