195256531 has 8 divisors (see below), whose sum is σ = 199499264. Its totient is φ = 191056320.

The previous prime is 195256519. The next prime is 195256541. The reversal of 195256531 is 135652591.

195256531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 195256531 - 2⁷ = 195256403 is a prime.

It is a super-2 number, since 2×195256531² = 76250225796307922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195256541) 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, 1260 + ... + 19801.

It is an arithmetic number, because the mean of its divisors is an integer number (24937408).

Almost surely, 2^195256531 is an apocalyptic number.

195256531 is a deficient number, since it is larger than the sum of its proper divisors (4242733).

195256531 is a wasteful number, since it uses less digits than its factorization.

195256531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21261.

The product of its digits is 40500, while the sum is 37.

The square root of 195256531 is about 13973.4223080819. The cubic root of 195256531 is about 580.1431780887.

The spelling of 195256531 in words is "one hundred ninety-five million, two hundred fifty-six thousand, five hundred thirty-one".