2005754957 has 4 divisors (see below), whose sum is σ = 2005904160. Its totient is φ = 2005605756.

The previous prime is 2005754953. The next prime is 2005754999. The reversal of 2005754957 is 7594575002.

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 2005754957 - 2² = 2005754953 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 (2005754953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52193 + ... + 82070.

It is an arithmetic number, because the mean of its divisors is an integer number (501476040).

Almost surely, 2^2005754957 is an apocalyptic number.

It is an amenable number.

2005754957 is a deficient number, since it is larger than the sum of its proper divisors (149203).

2005754957 is a wasteful number, since it uses less digits than its factorization.

2005754957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149202.

The product of its (nonzero) digits is 441000, while the sum is 44.

The square root of 2005754957 is about 44785.6557058172. The cubic root of 2005754957 is about 1261.1283578776.

The spelling of 2005754957 in words is "two billion, five million, seven hundred fifty-four thousand, nine hundred fifty-seven".