2172400519 has 2 divisors, whose sum is σ = 2172400520. Its totient is φ = 2172400518.

The previous prime is 2172400459. The next prime is 2172400523. The reversal of 2172400519 is 9150042712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172400519 - 2¹¹ = 2172398471 is a prime.

It is a super-2 number, since 2×2172400519² = 9438648029902938722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172400319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086200259 + 1086200260.

It is an arithmetic number, because the mean of its divisors is an integer number (1086200260).

Almost surely, 2^2172400519 is an apocalyptic number.

2172400519 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172400519 is an equidigital number, since it uses as much as digits as its factorization.

2172400519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2172400519 is about 46609.0175717103. The cubic root of 2172400519 is about 1295.1298089442.

The spelling of 2172400519 in words is "two billion, one hundred seventy-two million, four hundred thousand, five hundred nineteen".