102306257 has 8 divisors (see below), whose sum is σ = 103334400. Its totient is φ = 101282464.

The previous prime is 102306251. The next prime is 102306341. The reversal of 102306257 is 752603201.

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-102306257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102306251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64844 + ... + 66402.

It is an arithmetic number, because the mean of its divisors is an integer number (12916800).

Almost surely, 2^102306257 is an apocalyptic number.

It is an amenable number.

102306257 is a deficient number, since it is larger than the sum of its proper divisors (1028143).

102306257 is a wasteful number, since it uses less digits than its factorization.

102306257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 102306257 is about 10114.6555551833. The cubic root of 102306257 is about 467.7000308840.

Adding to 102306257 its reverse (752603201), we get a palindrome (854909458).

The spelling of 102306257 in words is "one hundred two million, three hundred six thousand, two hundred fifty-seven".