115642451 has 2 divisors, whose sum is σ = 115642452. Its totient is φ = 115642450.

The previous prime is 115642421. The next prime is 115642453. The reversal of 115642451 is 154246511.

It is a strong prime.

It is an emirp because it is prime and its reverse (154246511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115642451 is a prime.

Together with 115642453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115642453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57821225 + 57821226.

It is an arithmetic number, because the mean of its divisors is an integer number (57821226).

Almost surely, 2^115642451 is an apocalyptic number.

115642451 is a deficient number, since it is larger than the sum of its proper divisors (1).

115642451 is an equidigital number, since it uses as much as digits as its factorization.

115642451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 115642451 is about 10753.7180082053. The cubic root of 115642451 is about 487.1982981791.

Adding to 115642451 its reverse (154246511), we get a palindrome (269888962).

The spelling of 115642451 in words is "one hundred fifteen million, six hundred forty-two thousand, four hundred fifty-one".