2151315 has 12 divisors (see below), whose sum is σ = 3729024. Its totient is φ = 1147344.

The previous prime is 2151301. The next prime is 2151319. The reversal of 2151315 is 5131512.

It is not a de Polignac number, because 2151315 - 2⁵ = 2151283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151319) 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, 23859 + ... + 23948.

It is an arithmetic number, because the mean of its divisors is an integer number (310752).

2^2151315 is an apocalyptic number.

2151315 is a deficient number, since it is larger than the sum of its proper divisors (1577709).

2151315 is a wasteful number, since it uses less digits than its factorization.

2151315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47818 (or 47815 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 2151315 is about 1466.7361725955. The cubic root of 2151315 is about 129.0925962191.

Adding to 2151315 its reverse (5131512), we get a palindrome (7282827).

It can be divided in two parts, 21513 and 15, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 2151315 in words is "two million, one hundred fifty-one thousand, three hundred fifteen".