2137745 has 16 divisors (see below), whose sum is σ = 2684352. Its totient is φ = 1632960.

The previous prime is 2137741. The next prime is 2137763. The reversal of 2137745 is 5477312.

It is not a de Polignac number, because 2137745 - 2² = 2137741 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2¹⁹ + 1 + 3¹³ + 7³ + 7⁴ + 4⁷ + 5 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2137741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13034 + ... + 13196.

It is an arithmetic number, because the mean of its divisors is an integer number (167772).

2^2137745 is an apocalyptic number.

It is an amenable number.

2137745 is a deficient number, since it is larger than the sum of its proper divisors (546607).

2137745 is a wasteful number, since it uses less digits than its factorization.

2137745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its digits is 5880, while the sum is 29.

The square root of 2137745 is about 1462.1029375526. The cubic root of 2137745 is about 128.8205947097.

It can be divided in two parts, 2137 and 745, that added together give a palindrome (2882).

The spelling of 2137745 in words is "two million, one hundred thirty-seven thousand, seven hundred forty-five".