102153215 has 16 divisors (see below), whose sum is σ = 133201920. Its totient is φ = 74921760.

The previous prime is 102153211. The next prime is 102153217. The reversal of 102153215 is 512351201.

It is a happy number.

It is not a de Polignac number, because 102153215 - 2² = 102153211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102153211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14399 + ... + 20288.

It is an arithmetic number, because the mean of its divisors is an integer number (8325120).

Almost surely, 2^102153215 is an apocalyptic number.

102153215 is a deficient number, since it is larger than the sum of its proper divisors (31048705).

102153215 is a wasteful number, since it uses less digits than its factorization.

102153215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34742.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 102153215 is about 10107.0873648149. The cubic root of 102153215 is about 467.4667005174.

The spelling of 102153215 in words is "one hundred two million, one hundred fifty-three thousand, two hundred fifteen".