2151415 has 8 divisors (see below), whose sum is σ = 2950560. Its totient is φ = 1475232.

The previous prime is 2151403. The next prime is 2151421. The reversal of 2151415 is 5141512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2151415 - 2¹³ = 2143223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151392 and 2151401.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30700 + ... + 30769.

It is an arithmetic number, because the mean of its divisors is an integer number (368820).

2^2151415 is an apocalyptic number.

2151415 is a deficient number, since it is larger than the sum of its proper divisors (799145).

2151415 is an equidigital number, since it uses as much as digits as its factorization.

2151415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61481.

The product of its digits is 200, while the sum is 19.

The square root of 2151415 is about 1466.7702614929. The cubic root of 2151415 is about 129.0945964003.

Adding to 2151415 its reverse (5141512), we get a palindrome (7292927).

It can be divided in two parts, 21 and 51415, that multiplied together give a triangular number (1079715 = T₁₄₆₉).

The spelling of 2151415 in words is "two million, one hundred fifty-one thousand, four hundred fifteen".