2157507353 has 4 divisors (see below), whose sum is σ = 2192876388. Its totient is φ = 2122138320.

The previous prime is 2157507343. The next prime is 2157507379. The reversal of 2157507353 is 3537057512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103876864 + 2053630489 = 10192^2 + 45317^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157507353 - 2⁸ = 2157507097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157507343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17684426 + ... + 17684547.

It is an arithmetic number, because the mean of its divisors is an integer number (548219097).

Almost surely, 2^2157507353 is an apocalyptic number.

It is an amenable number.

2157507353 is a deficient number, since it is larger than the sum of its proper divisors (35369035).

2157507353 is an equidigital number, since it uses as much as digits as its factorization.

2157507353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35369034.

The product of its (nonzero) digits is 110250, while the sum is 38.

The square root of 2157507353 is about 46448.9758014103. The cubic root of 2157507353 is about 1292.1633776995.

The spelling of 2157507353 in words is "two billion, one hundred fifty-seven million, five hundred seven thousand, three hundred fifty-three".