2172153545 has 8 divisors (see below), whose sum is σ = 2607090624. Its totient is φ = 1737385264.

The previous prime is 2172153523. The next prime is 2172153569. The reversal of 2172153545 is 5453512712.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172153545 is a prime.

It is a super-3 number, since 3×2172153545³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11909 + ... + 66978.

It is an arithmetic number, because the mean of its divisors is an integer number (325886328).

Almost surely, 2^2172153545 is an apocalyptic number.

It is an amenable number.

2172153545 is a deficient number, since it is larger than the sum of its proper divisors (434937079).

2172153545 is an equidigital number, since it uses as much as digits as its factorization.

2172153545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84399.

The product of its digits is 42000, while the sum is 35.

The square root of 2172153545 is about 46606.3680734725. The cubic root of 2172153545 is about 1295.0807272166.

The spelling of 2172153545 in words is "two billion, one hundred seventy-two million, one hundred fifty-three thousand, five hundred forty-five".