2251611 has 16 divisors (see below), whose sum is σ = 3376800. Its totient is φ = 1482624.

The previous prime is 2251603. The next prime is 2251637. The reversal of 2251611 is 1161522.

2251611 is a `hidden beast` number, since 2 + 2 + 51 + 611 = 666.

It is not a de Polignac number, because 2251611 - 2³ = 2251603 is a prime.

2251611 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251681) 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, 1935 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (211050).

2^2251611 is an apocalyptic number.

2251611 is a deficient number, since it is larger than the sum of its proper divisors (1125189).

2251611 is an equidigital number, since it uses as much as digits as its factorization.

2251611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1029 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 2251611 is about 1500.5369039114. The cubic root of 2251611 is about 131.0683364299.

The spelling of 2251611 in words is "two million, two hundred fifty-one thousand, six hundred eleven".