2153739 has 8 divisors (see below), whose sum is σ = 3281920. Its totient is φ = 1230696.

The previous prime is 2153737. The next prime is 2153773. The reversal of 2153739 is 9373512.

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

It is not a de Polignac number, because 2153739 - 2¹ = 2153737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51259 + ... + 51300.

It is an arithmetic number, because the mean of its divisors is an integer number (410240).

2^2153739 is an apocalyptic number.

2153739 is a deficient number, since it is larger than the sum of its proper divisors (1128181).

2153739 is a wasteful number, since it uses less digits than its factorization.

2153739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102569.

The product of its digits is 5670, while the sum is 30.

The square root of 2153739 is about 1467.5622644372. The cubic root of 2153739 is about 129.1410631643.

The spelling of 2153739 in words is "two million, one hundred fifty-three thousand, seven hundred thirty-nine".