2152557 has 24 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 1226880.

The previous prime is 2152517. The next prime is 2152559. The reversal of 2152557 is 7552512.

It is a happy number.

It is not a de Polignac number, because 2152557 - 2⁷ = 2152429 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2152557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1044 + ... + 2322.

It is an arithmetic number, because the mean of its divisors is an integer number (149760).

2^2152557 is an apocalyptic number.

It is an amenable number.

2152557 is a deficient number, since it is larger than the sum of its proper divisors (1441683).

2152557 is a wasteful number, since it uses less digits than its factorization.

2152557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1310 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 2152557 is about 1467.1595005316. The cubic root of 2152557 is about 129.1174340756.

It can be divided in two parts, 215 and 2557, that added together give a palindrome (2772).

The spelling of 2152557 in words is "two million, one hundred fifty-two thousand, five hundred fifty-seven".