2157622 has 8 divisors (see below), whose sum is σ = 3265416. Its totient is φ = 1069152.

The previous prime is 2157587. The next prime is 2157641. The reversal of 2157622 is 2267512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2157622³ = 30133344719403017544, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4548 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (408177).

2^2157622 is an apocalyptic number.

2157622 is a deficient number, since it is larger than the sum of its proper divisors (1107794).

2157622 is a wasteful number, since it uses less digits than its factorization.

2157622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662.

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

The square root of 2157622 is about 1468.8846108527. The cubic root of 2157622 is about 129.2186265228.

The spelling of 2157622 in words is "two million, one hundred fifty-seven thousand, six hundred twenty-two".