2154157 has 8 divisors (see below), whose sum is σ = 2280384. Its totient is φ = 2030688.

The previous prime is 2154143. The next prime is 2154161. The reversal of 2154157 is 7514512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154157 - 2¹⁵ = 2121389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154127) 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, 1038 + ... + 2320.

It is an arithmetic number, because the mean of its divisors is an integer number (285048).

2^2154157 is an apocalyptic number.

It is an amenable number.

2154157 is a deficient number, since it is larger than the sum of its proper divisors (126227).

2154157 is a wasteful number, since it uses less digits than its factorization.

2154157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its digits is 1400, while the sum is 25.

The square root of 2154157 is about 1467.7046705656. The cubic root of 2154157 is about 129.1494172364.

Adding to 2154157 its reverse (7514512), we get a palindrome (9668669).

The spelling of 2154157 in words is "two million, one hundred fifty-four thousand, one hundred fifty-seven".