102591247 has 8 divisors (see below), whose sum is σ = 116784000. Its totient is φ = 89209560.

The previous prime is 102591239. The next prime is 102591283. The reversal of 102591247 is 742195201.

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

It is not a de Polignac number, because 102591247 - 2³ = 102591239 is a prime.

It is a super-2 number, since 2×102591247² = 21049927922030018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102591287) 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, 202497 + ... + 203002.

It is an arithmetic number, because the mean of its divisors is an integer number (14598000).

Almost surely, 2^102591247 is an apocalyptic number.

102591247 is a deficient number, since it is larger than the sum of its proper divisors (14192753).

102591247 is a wasteful number, since it uses less digits than its factorization.

102591247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405533.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 102591247 is about 10128.7337313210. The cubic root of 102591247 is about 468.1339119921.

The spelling of 102591247 in words is "one hundred two million, five hundred ninety-one thousand, two hundred forty-seven".