2052661657 has 16 divisors (see below), whose sum is σ = 2156366592. Its totient is φ = 1950220800.

The previous prime is 2052661649. The next prime is 2052661727. The reversal of 2052661657 is 7561662502.

It is a cyclic number.

It is not a de Polignac number, because 2052661657 - 2³ = 2052661649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2052661157) 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, 4214668 + ... + 4215154.

It is an arithmetic number, because the mean of its divisors is an integer number (134772912).

Almost surely, 2^2052661657 is an apocalyptic number.

It is an amenable number.

2052661657 is a deficient number, since it is larger than the sum of its proper divisors (103704935).

2052661657 is a wasteful number, since it uses less digits than its factorization.

2052661657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 2052661657 is about 45306.3092405462. The cubic root of 2052661657 is about 1270.8836425837.

The spelling of 2052661657 in words is "two billion, fifty-two million, six hundred sixty-one thousand, six hundred fifty-seven".