2757378457 has 2 divisors, whose sum is σ = 2757378458. Its totient is φ = 2757378456.

The previous prime is 2757378419. The next prime is 2757378467. The reversal of 2757378457 is 7548737572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2485919881 + 271458576 = 49859^2 + 16476^2 .

It is a cyclic number.

It is not a de Polignac number, because 2757378457 - 2¹¹ = 2757376409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2757378398 and 2757378407.

It is not a weakly prime, because it can be changed into another prime (2757378467) 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 as a sum of consecutive naturals, namely, 1378689228 + 1378689229.

It is an arithmetic number, because the mean of its divisors is an integer number (1378689229).

Almost surely, 2^2757378457 is an apocalyptic number.

It is an amenable number.

2757378457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2757378457 is an equidigital number, since it uses as much as digits as its factorization.

2757378457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11524800, while the sum is 55.

The square root of 2757378457 is about 52510.7461097250. The cubic root of 2757378457 is about 1402.2715600920.

It can be divided in two parts, 27573 and 78457, that added together give a triangular number (106030 = T₄₆₀).

The spelling of 2757378457 in words is "two billion, seven hundred fifty-seven million, three hundred seventy-eight thousand, four hundred fifty-seven".