2151850 has 12 divisors (see below), whose sum is σ = 4002534. Its totient is φ = 860720.

The previous prime is 2151847. The next prime is 2151869. The reversal of 2151850 is 581512.

It can be written as a sum of positive squares in 3 ways, for example, as 881721 + 1270129 = 939^2 + 1127^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21469 + ... + 21568.

2^2151850 is an apocalyptic number.

2151850 is a deficient number, since it is larger than the sum of its proper divisors (1850684).

2151850 is a wasteful number, since it uses less digits than its factorization.

2151850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43049 (or 43044 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 2151850 is about 1466.9185389789. The cubic root of 2151850 is about 129.1032964675.

The spelling of 2151850 in words is "two million, one hundred fifty-one thousand, eight hundred fifty".