5154124021 has 4 divisors (see below), whose sum is σ = 5199735852. Its totient is φ = 5108512192.

The previous prime is 5154124009. The next prime is 5154124033. The reversal of 5154124021 is 1204214515.

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

It is an interprime number because it is at equal distance from previous prime (5154124009) and next prime (5154124033).

It can be written as a sum of positive squares in 2 ways, for example, as 2003547121 + 3150576900 = 44761^2 + 56130^2 .

It is a cyclic number.

It is not a de Polignac number, because 5154124021 - 2⁷ = 5154123893 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 (5154124051) 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, 22805746 + ... + 22805971.

It is an arithmetic number, because the mean of its divisors is an integer number (1299933963).

Almost surely, 2^5154124021 is an apocalyptic number.

It is an amenable number.

5154124021 is a deficient number, since it is larger than the sum of its proper divisors (45611831).

5154124021 is a wasteful number, since it uses less digits than its factorization.

5154124021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45611830.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 5154124021 is about 71792.2281378702. The cubic root of 5154124021 is about 1727.3683378579.

Adding to 5154124021 its reverse (1204214515), we get a palindrome (6358338536).

The spelling of 5154124021 in words is "five billion, one hundred fifty-four million, one hundred twenty-four thousand, twenty-one".