102173481 has 12 divisors (see below), whose sum is σ = 153050352. Its totient is φ = 68115492.

The previous prime is 102173443. The next prime is 102173497. The reversal of 102173481 is 184371201.

102173481 is a `hidden beast` number, since 10 + 2 + 173 + 481 = 666.

It is not a de Polignac number, because 102173481 - 2¹⁹ = 101649193 is a prime.

It is a super-2 number, since 2×102173481² = 20878840439314722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102173081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209991 + ... + 210476.

It is an arithmetic number, because the mean of its divisors is an integer number (12754196).

Almost surely, 2^102173481 is an apocalyptic number.

It is an amenable number.

102173481 is a deficient number, since it is larger than the sum of its proper divisors (50876871).

102173481 is an frugal number, since it uses more digits than its factorization.

102173481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420482 (or 420470 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 102173481 is about 10108.0898789039. The cubic root of 102173481 is about 467.4976117773.

The spelling of 102173481 in words is "one hundred two million, one hundred seventy-three thousand, four hundred eighty-one".