2157465 has 8 divisors (see below), whose sum is σ = 3451968. Its totient is φ = 1150640.

The previous prime is 2157457. The next prime is 2157481. The reversal of 2157465 is 5647512.

2157465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2157465 - 2³ = 2157457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71901 + ... + 71930.

It is an arithmetic number, because the mean of its divisors is an integer number (431496).

2^2157465 is an apocalyptic number.

It is an amenable number.

2157465 is a deficient number, since it is larger than the sum of its proper divisors (1294503).

2157465 is a wasteful number, since it uses less digits than its factorization.

2157465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143839.

The product of its digits is 8400, while the sum is 30.

The square root of 2157465 is about 1468.8311679700. The cubic root of 2157465 is about 129.2154922363.

The spelling of 2157465 in words is "two million, one hundred fifty-seven thousand, four hundred sixty-five".