2152748557 has 4 divisors (see below), whose sum is σ = 2157862396. Its totient is φ = 2147634720.

The previous prime is 2152748537. The next prime is 2152748569. The reversal of 2152748557 is 7558472512.

It is a happy number.

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 1116294921 + 1036453636 = 33411^2 + 32194^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152748557 - 2²³ = 2144359949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152748537) 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, 2556288 + ... + 2557129.

It is an arithmetic number, because the mean of its divisors is an integer number (539465599).

Almost surely, 2^2152748557 is an apocalyptic number.

It is an amenable number.

2152748557 is a deficient number, since it is larger than the sum of its proper divisors (5113839).

2152748557 is an equidigital number, since it uses as much as digits as its factorization.

2152748557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113838.

The product of its digits is 784000, while the sum is 46.

The square root of 2152748557 is about 46397.7214634512. The cubic root of 2152748557 is about 1291.2126403451.

The spelling of 2152748557 in words is "two billion, one hundred fifty-two million, seven hundred forty-eight thousand, five hundred fifty-seven".