2151622 has 24 divisors (see below), whose sum is σ = 3763368. Its totient is φ = 918720.

The previous prime is 2151619. The next prime is 2151623. The reversal of 2151622 is 2261512.

It is a self number, because there is not a number n which added to its sum of digits gives 2151622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3853 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (156807).

2^2151622 is an apocalyptic number.

2151622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2151622 is a deficient number, since it is larger than the sum of its proper divisors (1611746).

2151622 is a wasteful number, since it uses less digits than its factorization.

2151622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 553 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 2151622 is about 1466.8408229934. The cubic root of 2151622 is about 129.0987365785.

The spelling of 2151622 in words is "two million, one hundred fifty-one thousand, six hundred twenty-two".