2752681157 has 16 divisors (see below), whose sum is σ = 2940980400. Its totient is φ = 2567405568.

The previous prime is 2752681133. The next prime is 2752681159. The reversal of 2752681157 is 7511862572.

It is a Cunningham number, because it is equal to 52466²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 18541636 + 2734139521 = 4306^2 + 52289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2752681157 - 2⁸ = 2752680901 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 (2752681159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197233 + ... + 1199529.

It is an arithmetic number, because the mean of its divisors is an integer number (183811275).

Almost surely, 2^2752681157 is an apocalyptic number.

It is an amenable number.

2752681157 is a deficient number, since it is larger than the sum of its proper divisors (188299243).

2752681157 is a wasteful number, since it uses less digits than its factorization.

2752681157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920.

The product of its digits is 235200, while the sum is 44.

The square root of 2752681157 is about 52466.0000095300. Note that the first 5 decimals coincide. The cubic root of 2752681157 is about 1401.4748330333.

The spelling of 2752681157 in words is "two billion, seven hundred fifty-two million, six hundred eighty-one thousand, one hundred fifty-seven".