2155330 has 16 divisors (see below), whose sum is σ = 4048704. Its totient is φ = 824560.

The previous prime is 2155327. The next prime is 2155333. The reversal of 2155330 is 335512.

It is an interprime number because it is at equal distance from previous prime (2155327) and next prime (2155333).

It is a junction number, because it is equal to n+sod(n) for n = 2155298 and 2155307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4456 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (253044).

2^2155330 is an apocalyptic number.

2155330 is a deficient number, since it is larger than the sum of its proper divisors (1893374).

2155330 is a wasteful number, since it uses less digits than its factorization.

2155330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9401.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 2155330 is about 1468.1042197337. The cubic root of 2155330 is about 129.1728548313.

It can be divided in two parts, 2155 and 330, that added together give a triangular number (2485 = T₇₀).

The spelling of 2155330 in words is "two million, one hundred fifty-five thousand, three hundred thirty".