46520021 has 4 divisors (see below), whose sum is σ = 46798752. Its totient is φ = 46241292.

The previous prime is 46520011. The next prime is 46520027. The reversal of 46520021 is 12002564.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 46520021 - 2¹⁴ = 46503637 is a prime.

It is a super-2 number, since 2×46520021² = 4328224707680882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 46519975 and 46520002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46520027) 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, 139115 + ... + 139448.

It is an arithmetic number, because the mean of its divisors is an integer number (11699688).

Almost surely, 2^46520021 is an apocalyptic number.

It is an amenable number.

46520021 is a deficient number, since it is larger than the sum of its proper divisors (278731).

46520021 is a wasteful number, since it uses less digits than its factorization.

46520021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278730.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 46520021 is about 6820.5587014555. The cubic root of 46520021 is about 359.6499194496.

Adding to 46520021 its reverse (12002564), we get a palindrome (58522585).

The spelling of 46520021 in words is "forty-six million, five hundred twenty thousand, twenty-one".