2151465 has 16 divisors (see below), whose sum is σ = 3624000. Its totient is φ = 1086912.

The previous prime is 2151463. The next prime is 2151467. The reversal of 2151465 is 5641512.

It is an interprime number because it is at equal distance from previous prime (2151463) and next prime (2151467).

It is not a de Polignac number, because 2151465 - 2¹ = 2151463 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3490 + ... + 4059.

It is an arithmetic number, because the mean of its divisors is an integer number (226500).

2^2151465 is an apocalyptic number.

It is an amenable number.

2151465 is a deficient number, since it is larger than the sum of its proper divisors (1472535).

2151465 is a wasteful number, since it uses less digits than its factorization.

2151465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7576.

The product of its digits is 1200, while the sum is 24.

The square root of 2151465 is about 1466.7873056446. The cubic root of 2151465 is about 129.0955964677.

Adding to 2151465 its reverse (5641512), we get a palindrome (7792977).

The spelling of 2151465 in words is "two million, one hundred fifty-one thousand, four hundred sixty-five".