2152451 has 8 divisors (see below), whose sum is σ = 2517504. Its totient is φ = 1801800.

The previous prime is 2152433. The next prime is 2152457. The reversal of 2152451 is 1542512.

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

It is a de Polignac number, because none of the positive numbers 2^k-2152451 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 (2152457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3275 + ... + 3876.

It is an arithmetic number, because the mean of its divisors is an integer number (314688).

2^2152451 is an apocalyptic number.

2152451 is a deficient number, since it is larger than the sum of its proper divisors (365053).

2152451 is an equidigital number, since it uses as much as digits as its factorization.

2152451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7201.

The product of its digits is 400, while the sum is 20.

The square root of 2152451 is about 1467.1233758618. The cubic root of 2152451 is about 129.1153146315.

Adding to 2152451 its reverse (1542512), we get a palindrome (3694963).

The spelling of 2152451 in words is "two million, one hundred fifty-two thousand, four hundred fifty-one".