102115451 has 8 divisors (see below), whose sum is σ = 103527600. Its totient is φ = 100712160.

The previous prime is 102115441. The next prime is 102115463. The reversal of 102115451 is 154511201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102115451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102115441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22916 + ... + 27006.

It is an arithmetic number, because the mean of its divisors is an integer number (12940950).

Almost surely, 2^102115451 is an apocalyptic number.

102115451 is a deficient number, since it is larger than the sum of its proper divisors (1412149).

102115451 is a wasteful number, since it uses less digits than its factorization.

102115451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 102115451 is about 10105.2189981217. The cubic root of 102115451 is about 467.4090890551.

Adding to 102115451 its reverse (154511201), we get a palindrome (256626652).

The spelling of 102115451 in words is "one hundred two million, one hundred fifteen thousand, four hundred fifty-one".