2151359 has 4 divisors (see below), whose sum is σ = 2458704.
Its totient is φ = 1844016.
The previous prime is 2151353. The next prime is 2151377. The reversal of 2151359 is 9531512.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 2151359 - 212 = 2147263 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2151353) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153662 + ... + 153675.
It is an arithmetic number, because the mean of its divisors is an integer number (614676).
22151359 is an apocalyptic number.
2151359 is a deficient number, since it is larger than the sum of its proper divisors (307345).
2151359 is an equidigital number, since it uses as much as digits as its factorization.
2151359 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 307344.
The product of its digits is 1350, while the sum is 26.
The square root of 2151359 is about 1466.7511718080.
The cubic root of 2151359 is about 129.0934763065.
The spelling of 2151359 in words is "two million, one hundred fifty-one thousand, three hundred fifty-nine".