2151250 has 20 divisors (see below), whose sum is σ = 4034646. Its totient is φ = 860000.

The previous prime is 2151241. The next prime is 2151251. The reversal of 2151250 is 521512.

It can be written as a sum of positive squares in 5 ways, for example, as 114921 + 2036329 = 339^2 + 1427^2 .

It is not an unprimeable number, because it can be changed into a prime (2151251) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 390 + ... + 2110.

2^2151250 is an apocalyptic number.

2151250 is a deficient number, since it is larger than the sum of its proper divisors (1883396).

2151250 is an equidigital number, since it uses as much as digits as its factorization.

2151250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2151250 is about 1466.7140143873. The cubic root of 2151250 is about 129.0912960680.

Adding to 2151250 its reverse (521512), we get a palindrome (2672762).

It can be divided in two parts, 2151 and 250, that added together give a 4-th power (2401 = 7⁴).

The spelling of 2151250 in words is "two million, one hundred fifty-one thousand, two hundred fifty".