2137651 has 4 divisors (see below), whose sum is σ = 2140992. Its totient is φ = 2134312.

The previous prime is 2137637. The next prime is 2137669. The reversal of 2137651 is 1567312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2137651 - 2¹⁷ = 2006579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2137151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (535248).

2^2137651 is an apocalyptic number.

2137651 is a deficient number, since it is larger than the sum of its proper divisors (3341).

2137651 is an equidigital number, since it uses as much as digits as its factorization.

2137651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340.

The product of its digits is 1260, while the sum is 25.

The square root of 2137651 is about 1462.0707917197. The cubic root of 2137651 is about 128.8187065342.

The spelling of 2137651 in words is "two million, one hundred thirty-seven thousand, six hundred fifty-one".