46515221 has 4 divisors (see below), whose sum is σ = 48015744. Its totient is φ = 45014700.

The previous prime is 46515191. The next prime is 46515229. The reversal of 46515221 is 12251564.

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 a de Polignac number, because none of the positive numbers 2^k-46515221 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 (46515229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750215 + ... + 750276.

It is an arithmetic number, because the mean of its divisors is an integer number (12003936).

Almost surely, 2^46515221 is an apocalyptic number.

It is an amenable number.

46515221 is a deficient number, since it is larger than the sum of its proper divisors (1500523).

46515221 is a wasteful number, since it uses less digits than its factorization.

46515221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500522.

The product of its digits is 2400, while the sum is 26.

The square root of 46515221 is about 6820.2068150460. The cubic root of 46515221 is about 359.6375492990.

Adding to 46515221 its reverse (12251564), we get a palindrome (58766785).

The spelling of 46515221 in words is "forty-six million, five hundred fifteen thousand, two hundred twenty-one".