2521151 has 4 divisors (see below), whose sum is σ = 2669472. Its totient is φ = 2372832.

The previous prime is 2521147. The next prime is 2521153. The reversal of 2521151 is 1511252.

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 2521151 - 2² = 2521147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 148303 = 2521151 / (2 + 5 + 2 + 1 + 1 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74135 + ... + 74168.

It is an arithmetic number, because the mean of its divisors is an integer number (667368).

2^2521151 is an apocalyptic number.

2521151 is a deficient number, since it is larger than the sum of its proper divisors (148321).

2521151 is a wasteful number, since it uses less digits than its factorization.

2521151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148320.

The product of its digits is 100, while the sum is 17.

The square root of 2521151 is about 1587.8132761758. The cubic root of 2521151 is about 136.1025574460.

The spelling of 2521151 in words is "two million, five hundred twenty-one thousand, one hundred fifty-one".