2061852557 has 4 divisors (see below), whose sum is σ = 2062102560. Its totient is φ = 2061602556.

The previous prime is 2061852553. The next prime is 2061852581. The reversal of 2061852557 is 7552581602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2061852557 - 2² = 2061852553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061852553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112193 + ... + 129270.

It is an arithmetic number, because the mean of its divisors is an integer number (515525640).

Almost surely, 2^2061852557 is an apocalyptic number.

It is an amenable number.

2061852557 is a deficient number, since it is larger than the sum of its proper divisors (250003).

2061852557 is an equidigital number, since it uses as much as digits as its factorization.

2061852557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250002.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 2061852557 is about 45407.6266391451. The cubic root of 2061852557 is about 1272.7776345821. Note that the first 3 decimals are identical.

The spelling of 2061852557 in words is "two billion, sixty-one million, eight hundred fifty-two thousand, five hundred fifty-seven".