2152457 has 2 divisors, whose sum is σ = 2152458. Its totient is φ = 2152456.

The previous prime is 2152433. The next prime is 2152477. The reversal of 2152457 is 7542512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893376 + 259081 = 1376^2 + 509^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152457 - 2⁶ = 2152393 is a prime.

It is a super-2 number, since 2×2152457² = 9266142273698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2152427) 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 as a sum of consecutive naturals, namely, 1076228 + 1076229.

It is an arithmetic number, because the mean of its divisors is an integer number (1076229).

2^2152457 is an apocalyptic number.

It is an amenable number.

2152457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152457 is an equidigital number, since it uses as much as digits as its factorization.

2152457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2800, while the sum is 26.

The square root of 2152457 is about 1467.1254206781. The cubic root of 2152457 is about 129.1154346019.

Adding to 2152457 its reverse (7542512), we get a palindrome (9694969).

The spelling of 2152457 in words is "two million, one hundred fifty-two thousand, four hundred fifty-seven".