2143154501 has 4 divisors (see below), whose sum is σ = 2195426604. Its totient is φ = 2090882400.

The previous prime is 2143154483. The next prime is 2143154509. The reversal of 2143154501 is 1054513412.

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 445632100 + 1697522401 = 21110^2 + 41201^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143154501 - 2¹⁰ = 2143153477 is a prime.

It is a super-2 number, since 2×2143154501² = 9186222430313118002, 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 (2143154509) 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, 26135990 + ... + 26136071.

It is an arithmetic number, because the mean of its divisors is an integer number (548856651).

Almost surely, 2^2143154501 is an apocalyptic number.

It is an amenable number.

2143154501 is a deficient number, since it is larger than the sum of its proper divisors (52272103).

2143154501 is an equidigital number, since it uses as much as digits as its factorization.

2143154501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52272102.

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

The square root of 2143154501 is about 46294.2167122417. The cubic root of 2143154501 is about 1289.2916209735.

Adding to 2143154501 its reverse (1054513412), we get a palindrome (3197667913).

The spelling of 2143154501 in words is "two billion, one hundred forty-three million, one hundred fifty-four thousand, five hundred one".