102551217 has 8 divisors (see below), whose sum is σ = 137229696. Its totient is φ = 68120112.

The previous prime is 102551179. The next prime is 102551219. The reversal of 102551217 is 712155201.

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

It is not a de Polignac number, because 102551217 - 2²⁰ = 101502641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102551219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60873 + ... + 62534.

It is an arithmetic number, because the mean of its divisors is an integer number (17153712).

Almost surely, 2^102551217 is an apocalyptic number.

It is an amenable number.

102551217 is a deficient number, since it is larger than the sum of its proper divisors (34678479).

102551217 is a wasteful number, since it uses less digits than its factorization.

102551217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123687.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 102551217 is about 10126.7574771000. The cubic root of 102551217 is about 468.0730171339.

The spelling of 102551217 in words is "one hundred two million, five hundred fifty-one thousand, two hundred seventeen".