2251671801 has 4 divisors (see below), whose sum is σ = 3002229072. Its totient is φ = 1501114532.

The previous prime is 2251671797. The next prime is 2251671803. The reversal of 2251671801 is 1081761522.

2251671801 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2251671801 - 2² = 2251671797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251671803) 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, 375278631 + ... + 375278636.

It is an arithmetic number, because the mean of its divisors is an integer number (750557268).

Almost surely, 2^2251671801 is an apocalyptic number.

It is an amenable number.

2251671801 is a deficient number, since it is larger than the sum of its proper divisors (750557271).

2251671801 is an equidigital number, since it uses as much as digits as its factorization.

2251671801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750557270.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 2251671801 is about 47451.7839601421. The cubic root of 2251671801 is about 1310.6951617994.

The spelling of 2251671801 in words is "two billion, two hundred fifty-one million, six hundred seventy-one thousand, eight hundred one".