2138497 has 8 divisors (see below), whose sum is σ = 2201256. Its totient is φ = 2076672.

The previous prime is 2138491. The next prime is 2138501. The reversal of 2138497 is 7948312.

It can be written as a sum of positive squares in 4 ways, for example, as 952576 + 1185921 = 976^2 + 1089^2 .

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 2138497 - 2¹⁵ = 2105729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138491) 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, 8193 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (275157).

2^2138497 is an apocalyptic number.

It is an amenable number.

2138497 is a deficient number, since it is larger than the sum of its proper divisors (62759).

2138497 is a wasteful number, since it uses less digits than its factorization.

2138497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467.

The product of its digits is 12096, while the sum is 34.

The square root of 2138497 is about 1462.3600787768. The cubic root of 2138497 is about 128.8356981217.

The spelling of 2138497 in words is "two million, one hundred thirty-eight thousand, four hundred ninety-seven".