2140451557 has 2 divisors, whose sum is σ = 2140451558. Its totient is φ = 2140451556.

The previous prime is 2140451527. The next prime is 2140451597. The reversal of 2140451557 is 7551540412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1827904516 + 312547041 = 42754^2 + 17679^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140451557 - 2⁷ = 2140451429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140451527) 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, 1070225778 + 1070225779.

It is an arithmetic number, because the mean of its divisors is an integer number (1070225779).

Almost surely, 2^2140451557 is an apocalyptic number.

It is an amenable number.

2140451557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140451557 is an equidigital number, since it uses as much as digits as its factorization.

2140451557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 2140451557 is about 46265.0143953290. The cubic root of 2140451557 is about 1288.7493752449.

Adding to 2140451557 its reverse (7551540412), we get a palindrome (9691991969).

The spelling of 2140451557 in words is "two billion, one hundred forty million, four hundred fifty-one thousand, five hundred fifty-seven".