2157710053 has 4 divisors (see below), whose sum is σ = 2271273760. Its totient is φ = 2044146348.

The previous prime is 2157710047. The next prime is 2157710089. The reversal of 2157710053 is 3500177512.

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 a de Polignac number, because none of the positive numbers 2^k-2157710053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2157709997 and 2157710024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157710003) 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, 56781825 + ... + 56781862.

It is an arithmetic number, because the mean of its divisors is an integer number (567818440).

Almost surely, 2^2157710053 is an apocalyptic number.

It is an amenable number.

2157710053 is a deficient number, since it is larger than the sum of its proper divisors (113563707).

2157710053 is a wasteful number, since it uses less digits than its factorization.

2157710053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113563706.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 2157710053 is about 46451.1577143132. The cubic root of 2157710053 is about 1292.2038431181.

Adding to 2157710053 its reverse (3500177512), we get a palindrome (5657887565).

The spelling of 2157710053 in words is "two billion, one hundred fifty-seven million, seven hundred ten thousand, fifty-three".