2138545 has 8 divisors (see below), whose sum is σ = 2701440. Its totient is φ = 1620720.

The previous prime is 2138537. The next prime is 2138551. The reversal of 2138545 is 5458312.

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

It is not a de Polignac number, because 2138545 - 2³ = 2138537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11161 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (337680).

2^2138545 is an apocalyptic number.

It is an amenable number.

2138545 is a deficient number, since it is larger than the sum of its proper divisors (562895).

2138545 is a wasteful number, since it uses less digits than its factorization.

2138545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22535.

The product of its digits is 4800, while the sum is 28.

The square root of 2138545 is about 1462.3764905112. The cubic root of 2138545 is about 128.8366620490.

The spelling of 2138545 in words is "two million, one hundred thirty-eight thousand, five hundred forty-five".