2153457 has 6 divisors (see below), whose sum is σ = 3110562. Its totient is φ = 1435632.

The previous prime is 2153449. The next prime is 2153471. The reversal of 2153457 is 7543512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1838736 + 314721 = 1356^2 + 561^2 .

It is not a de Polignac number, because 2153457 - 2³ = 2153449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2153457.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119628 + ... + 119645.

It is an arithmetic number, because the mean of its divisors is an integer number (518427).

2^2153457 is an apocalyptic number.

It is an amenable number.

2153457 is a deficient number, since it is larger than the sum of its proper divisors (957105).

2153457 is a wasteful number, since it uses less digits than its factorization.

2153457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239279 (or 239276 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2153457 is about 1467.4661835967. The cubic root of 2153457 is about 129.1354265529.

Adding to 2153457 its reverse (7543512), we get a palindrome (9696969).

The spelling of 2153457 in words is "two million, one hundred fifty-three thousand, four hundred fifty-seven".