2155498 has 8 divisors (see below), whose sum is σ = 3423492. Its totient is φ = 1014336.

The previous prime is 2155487. The next prime is 2155499. The reversal of 2155498 is 8945512.

2155498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 15129 = 1463^2 + 123^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 63397 = 2155498 / (2 + 1 + 5 + 5 + 4 + 9 + 8).

It is not an unprimeable number, because it can be changed into a prime (2155499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31665 + ... + 31732.

2^2155498 is an apocalyptic number.

2155498 is a deficient number, since it is larger than the sum of its proper divisors (1267994).

2155498 is a wasteful number, since it uses less digits than its factorization.

2155498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63416.

The product of its digits is 14400, while the sum is 34.

The square root of 2155498 is about 1468.1614352652. The cubic root of 2155498 is about 129.1762109261.

The spelling of 2155498 in words is "two million, one hundred fifty-five thousand, four hundred ninety-eight".