2571622 has 4 divisors (see below), whose sum is σ = 3857436. Its totient is φ = 1285810.

The previous prime is 2571619. The next prime is 2571649. The reversal of 2571622 is 2261752.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2571622² = 13226479421768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642904 + ... + 642907.

It is an arithmetic number, because the mean of its divisors is an integer number (964359).

2^2571622 is an apocalyptic number.

2571622 is a deficient number, since it is larger than the sum of its proper divisors (1285814).

2571622 is a wasteful number, since it uses less digits than its factorization.

2571622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285813.

The product of its digits is 1680, while the sum is 25.

The square root of 2571622 is about 1603.6277622940. The cubic root of 2571622 is about 137.0047772146.

The spelling of 2571622 in words is "two million, five hundred seventy-one thousand, six hundred twenty-two".