2451149 has 4 divisors (see below), whose sum is σ = 2478780. Its totient is φ = 2423520.

The previous prime is 2451143. The next prime is 2451151. The reversal of 2451149 is 9411542.

2451149 = 17² + 18² + ... + 194².

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

It can be written as a sum of positive squares in 2 ways, for example, as 714025 + 1737124 = 845^2 + 1318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2451149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451143) 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, 13682 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (619695).

2^2451149 is an apocalyptic number.

It is an amenable number.

2451149 is a deficient number, since it is larger than the sum of its proper divisors (27631).

2451149 is an equidigital number, since it uses as much as digits as its factorization.

2451149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27630.

The product of its digits is 1440, while the sum is 26.

The square root of 2451149 is about 1565.6145758136. The cubic root of 2451149 is about 134.8310460708.

The spelling of 2451149 in words is "two million, four hundred fifty-one thousand, one hundred forty-nine".