5121954361 has 8 divisors (see below), whose sum is σ = 5484182760. Its totient is φ = 4766496768.

The previous prime is 5121954359. The next prime is 5121954401. The reversal of 5121954361 is 1634591215.

It can be written as a sum of positive squares in 4 ways, for example, as 786522025 + 4335432336 = 28045^2 + 65844^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5121954361 - 2¹ = 5121954359 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 5121954361.

It is not an unprimeable number, because it can be changed into a prime (5121954301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1691136 + ... + 1694161.

It is an arithmetic number, because the mean of its divisors is an integer number (685522845).

Almost surely, 2^5121954361 is an apocalyptic number.

It is an amenable number.

5121954361 is a deficient number, since it is larger than the sum of its proper divisors (362228399).

5121954361 is a wasteful number, since it uses less digits than its factorization.

5121954361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385403.

The product of its digits is 32400, while the sum is 37.

The square root of 5121954361 is about 71567.8304896830. The cubic root of 5121954361 is about 1723.7670232501.

The spelling of 5121954361 in words is "five billion, one hundred twenty-one million, nine hundred fifty-four thousand, three hundred sixty-one".