2178472551 has 8 divisors (see below), whose sum is σ = 2909481600. Its totient is φ = 1449889272.

The previous prime is 2178472537. The next prime is 2178472567. The reversal of 2178472551 is 1552748712.

2178472551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2178472551 - 2¹³ = 2178464359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178472511) 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, 604345 + ... + 607938.

It is an arithmetic number, because the mean of its divisors is an integer number (363685200).

Almost surely, 2^2178472551 is an apocalyptic number.

2178472551 is a deficient number, since it is larger than the sum of its proper divisors (731009049).

2178472551 is a wasteful number, since it uses less digits than its factorization.

2178472551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212885.

The product of its digits is 156800, while the sum is 42.

The square root of 2178472551 is about 46674.1100718589. The cubic root of 2178472551 is about 1296.3353500084.

The spelling of 2178472551 in words is "two billion, one hundred seventy-eight million, four hundred seventy-two thousand, five hundred fifty-one".