2571990 has 16 divisors (see below), whose sum is σ = 6172848. Its totient is φ = 685856.

The previous prime is 2571979. The next prime is 2572001. The reversal of 2571990 is 991752.

It is an interprime number because it is at equal distance from previous prime (2571979) and next prime (2572001).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42837 + ... + 42896.

It is an arithmetic number, because the mean of its divisors is an integer number (385803).

2^2571990 is an apocalyptic number.

2571990 is an abundant number, since it is smaller than the sum of its proper divisors (3600858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2571990 is a wasteful number, since it uses less digits than its factorization.

2571990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85743.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 2571990 is about 1603.7424980339. The cubic root of 2571990 is about 137.0113120466.

The spelling of 2571990 in words is "two million, five hundred seventy-one thousand, nine hundred ninety".