2171254457 has 8 divisors (see below), whose sum is σ = 2210042880. Its totient is φ = 2132532400.

The previous prime is 2171254429. The next prime is 2171254483. The reversal of 2171254457 is 7544521712.

It is a happy number.

2171254457 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 a cyclic number.

It is not a de Polignac number, because 2171254457 - 2⁸ = 2171254201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2171254457.

It is not an unprimeable number, because it can be changed into a prime (2171253457) 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, 51923 + ... + 83895.

It is an arithmetic number, because the mean of its divisors is an integer number (276255360).

Almost surely, 2^2171254457 is an apocalyptic number.

It is an amenable number.

2171254457 is a deficient number, since it is larger than the sum of its proper divisors (38788423).

2171254457 is a wasteful number, since it uses less digits than its factorization.

2171254457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33183.

The product of its digits is 78400, while the sum is 38.

The square root of 2171254457 is about 46596.7215263048. The cubic root of 2171254457 is about 1294.9020178994.

The spelling of 2171254457 in words is "two billion, one hundred seventy-one million, two hundred fifty-four thousand, four hundred fifty-seven".