2102050557 has 12 divisors (see below), whose sum is σ = 3039077340. Its totient is φ = 1400083008.

The previous prime is 2102050553. The next prime is 2102050591. The reversal of 2102050557 is 7550502012.

It is a happy number.

2102050557 is a `hidden beast` number, since 2 + 102 + 0 + 5 + 0 + 557 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1079713881 + 1022336676 = 32859^2 + 31974^2 .

It is not a de Polignac number, because 2102050557 - 2² = 2102050553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102050557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102050553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96582 + ... + 116327.

It is an arithmetic number, because the mean of its divisors is an integer number (253256445).

Almost surely, 2^2102050557 is an apocalyptic number.

It is an amenable number.

2102050557 is a deficient number, since it is larger than the sum of its proper divisors (937026783).

2102050557 is a wasteful number, since it uses less digits than its factorization.

2102050557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214012 (or 214009 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 2102050557 is about 45848.1249016795. The cubic root of 2102050557 is about 1280.9958390101.

Adding to 2102050557 its reverse (7550502012), we get a palindrome (9652552569).

The spelling of 2102050557 in words is "two billion, one hundred two million, fifty thousand, five hundred fifty-seven".