2115554 has 16 divisors (see below), whose sum is σ = 3656448. Its totient is φ = 899232.

The previous prime is 2115539. The next prime is 2115571. The reversal of 2115554 is 4555112.

It is a happy number.

It is a Curzon number.

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, 1367 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (228528).

2^2115554 is an apocalyptic number.

2115554 is a deficient number, since it is larger than the sum of its proper divisors (1540894).

2115554 is a wasteful number, since it uses less digits than its factorization.

2115554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249.

The product of its digits is 1000, while the sum is 23.

The square root of 2115554 is about 1454.4944138772. The cubic root of 2115554 is about 128.3732998962.

The spelling of 2115554 in words is "two million, one hundred fifteen thousand, five hundred fifty-four".