46143721 has 4 divisors (see below), whose sum is σ = 49693252. Its totient is φ = 42594192.

The previous prime is 46143719. The next prime is 46143731. The reversal of 46143721 is 12734164.

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 24651225 + 21492496 = 4965^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 46143721 - 2¹ = 46143719 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 46143721.

It is not an unprimeable number, because it can be changed into a prime (46143701) 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, 1774746 + ... + 1774771.

It is an arithmetic number, because the mean of its divisors is an integer number (12423313).

Almost surely, 2^46143721 is an apocalyptic number.

It is an amenable number.

46143721 is a deficient number, since it is larger than the sum of its proper divisors (3549531).

46143721 is a wasteful number, since it uses less digits than its factorization.

46143721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549530.

The product of its digits is 4032, while the sum is 28.

The square root of 46143721 is about 6792.9169728475. The cubic root of 46143721 is about 358.6775580033.

Adding to 46143721 its reverse (12734164), we get a palindrome (58877885).

It can be divided in two parts, 46143 and 721, that added together give a palindrome (46864).

The spelling of 46143721 in words is "forty-six million, one hundred forty-three thousand, seven hundred twenty-one".