2154250117 has 2 divisors, whose sum is σ = 2154250118. Its totient is φ = 2154250116.

The previous prime is 2154250103. The next prime is 2154250139. The reversal of 2154250117 is 7110524512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2152403236 + 1846881 = 46394^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154250117 - 2¹⁵ = 2154217349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154250187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077125058 + 1077125059.

It is an arithmetic number, because the mean of its divisors is an integer number (1077125059).

Almost surely, 2^2154250117 is an apocalyptic number.

It is an amenable number.

2154250117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154250117 is an equidigital number, since it uses as much as digits as its factorization.

2154250117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2154250117 is about 46413.9000408283. The cubic root of 2154250117 is about 1291.5127810864.

Adding to 2154250117 its reverse (7110524512), we get a palindrome (9264774629).

The spelling of 2154250117 in words is "two billion, one hundred fifty-four million, two hundred fifty thousand, one hundred seventeen".