2154257 has 16 divisors (see below), whose sum is σ = 2673792. Its totient is φ = 1693440.

The previous prime is 2154241. The next prime is 2154259. The reversal of 2154257 is 7524512.

It is not a de Polignac number, because 2154257 - 2⁴ = 2154241 is a prime.

It is a Duffinian number.

2154257 is a modest number, since divided by 4257 gives 215 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4907 + ... + 5327.

It is an arithmetic number, because the mean of its divisors is an integer number (167112).

2^2154257 is an apocalyptic number.

It is an amenable number.

2154257 is a deficient number, since it is larger than the sum of its proper divisors (519535).

2154257 is a wasteful number, since it uses less digits than its factorization.

2154257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its digits is 2800, while the sum is 26.

The square root of 2154257 is about 1467.7387369692. The cubic root of 2154257 is about 129.1514156580.

Adding to 2154257 its reverse (7524512), we get a palindrome (9678769).

The spelling of 2154257 in words is "two million, one hundred fifty-four thousand, two hundred fifty-seven".