2151170651 has 16 divisors (see below), whose sum is σ = 2474051328. Its totient is φ = 1832220000.

The previous prime is 2151170647. The next prime is 2151170687. The reversal of 2151170651 is 1560711512.

It is a cyclic number.

It is not a de Polignac number, because 2151170651 - 2² = 2151170647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151170251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917741 + ... + 920081.

It is an arithmetic number, because the mean of its divisors is an integer number (154628208).

Almost surely, 2^2151170651 is an apocalyptic number.

2151170651 is a deficient number, since it is larger than the sum of its proper divisors (322880677).

2151170651 is a wasteful number, since it uses less digits than its factorization.

2151170651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122.

The product of its (nonzero) digits is 2100, while the sum is 29.

The square root of 2151170651 is about 46380.7142139920. The cubic root of 2151170651 is about 1290.8970886817.

The spelling of 2151170651 in words is "two billion, one hundred fifty-one million, one hundred seventy thousand, six hundred fifty-one".