2151258 has 24 divisors (see below), whose sum is σ = 4419168. Its totient is φ = 698088.

The previous prime is 2151251. The next prime is 2151263. The reversal of 2151258 is 8521512.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 20835 + ... + 20937.

It is an arithmetic number, because the mean of its divisors is an integer number (184132).

2^2151258 is an apocalyptic number.

2151258 is an abundant number, since it is smaller than the sum of its proper divisors (2267910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151258 is a wasteful number, since it uses less digits than its factorization.

2151258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 167 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 2151258 is about 1466.7167415694. The cubic root of 2151258 is about 129.0914560880.

The spelling of 2151258 in words is "two million, one hundred fifty-one thousand, two hundred fifty-eight".