2151525 has 12 divisors (see below), whose sum is σ = 3557312. Its totient is φ = 1147440.

The previous prime is 2151521. The next prime is 2151533. The reversal of 2151525 is 5251512.

It is not a de Polignac number, because 2151525 - 2² = 2151521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14269 + ... + 14418.

2^2151525 is an apocalyptic number.

2151525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2151525 is a deficient number, since it is larger than the sum of its proper divisors (1405787).

2151525 is a wasteful number, since it uses less digits than its factorization.

2151525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28700 (or 28695 counting only the distinct ones).

The product of its digits is 500, while the sum is 21.

The square root of 2151525 is about 1466.8077583651. The cubic root of 2151525 is about 129.0967965281.

The spelling of 2151525 in words is "two million, one hundred fifty-one thousand, five hundred twenty-five".