2147020457 has 8 divisors (see below), whose sum is σ = 2284859016. Its totient is φ = 2010464512.

The previous prime is 2147020441. The next prime is 2147020493. The reversal of 2147020457 is 7540207412.

It can be written as a sum of positive squares in 4 ways, for example, as 525830761 + 1621189696 = 22931^2 + 40264^2 .

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 2147020457 - 2⁴ = 2147020441 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2147020357) 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, 317198 + ... + 323895.

It is an arithmetic number, because the mean of its divisors is an integer number (285607377).

Almost surely, 2^2147020457 is an apocalyptic number.

It is an amenable number.

2147020457 is a deficient number, since it is larger than the sum of its proper divisors (137838559).

2147020457 is a wasteful number, since it uses less digits than its factorization.

2147020457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641307.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 2147020457 is about 46335.9520998544. The cubic root of 2147020457 is about 1290.0663902294.

Adding to 2147020457 its reverse (7540207412), we get a palindrome (9687227869).

The spelling of 2147020457 in words is "two billion, one hundred forty-seven million, twenty thousand, four hundred fifty-seven".