2170772651 has 4 divisors (see below), whose sum is σ = 2171732472. Its totient is φ = 2169812832.

The previous prime is 2170772633. The next prime is 2170772677. The reversal of 2170772651 is 1562770712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2170772651 - 2⁶ = 2170772587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170771651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476510 + ... + 481043.

It is an arithmetic number, because the mean of its divisors is an integer number (542933118).

Almost surely, 2^2170772651 is an apocalyptic number.

2170772651 is a deficient number, since it is larger than the sum of its proper divisors (959821).

2170772651 is an equidigital number, since it uses as much as digits as its factorization.

2170772651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959820.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 2170772651 is about 46591.5512834677. The cubic root of 2170772651 is about 1294.8062303063.

The spelling of 2170772651 in words is "two billion, one hundred seventy million, seven hundred seventy-two thousand, six hundred fifty-one".