195021285 has 16 divisors (see below), whose sum is σ = 312250560. Its totient is φ = 103939200.

The previous prime is 195021251. The next prime is 195021293. The reversal of 195021285 is 582120591.

195021285 = 4651² + 4652² + ... + 4659².

It is not a de Polignac number, because 195021285 - 2¹⁰ = 195020261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23406 + ... + 30624.

It is an arithmetic number, because the mean of its divisors is an integer number (19515660).

Almost surely, 2^195021285 is an apocalyptic number.

195021285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195021285 is a deficient number, since it is larger than the sum of its proper divisors (117229275).

195021285 is a wasteful number, since it uses less digits than its factorization.

195021285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 195021285 is about 13965.0021482275. The cubic root of 195021285 is about 579.9100980355.

The spelling of 195021285 in words is "one hundred ninety-five million, twenty-one thousand, two hundred eighty-five".