2054915557 has 2 divisors, whose sum is σ = 2054915558. Its totient is φ = 2054915556.

The previous prime is 2054915537. The next prime is 2054915563. The reversal of 2054915557 is 7555194502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1662519076 + 392396481 = 40774^2 + 19809^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054915557 - 2¹⁵ = 2054882789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2054915537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027457778 + 1027457779.

It is an arithmetic number, because the mean of its divisors is an integer number (1027457779).

Almost surely, 2^2054915557 is an apocalyptic number.

It is an amenable number.

2054915557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054915557 is an equidigital number, since it uses as much as digits as its factorization.

2054915557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315000, while the sum is 43.

The square root of 2054915557 is about 45331.1764352085. The cubic root of 2054915557 is about 1271.3486318410.

The spelling of 2054915557 in words is "two billion, fifty-four million, nine hundred fifteen thousand, five hundred fifty-seven".