195520715 has 8 divisors (see below), whose sum is σ = 252673008. Its totient is φ = 144384480.

The previous prime is 195520711. The next prime is 195520739. The reversal of 195520715 is 517025591.

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

It is not a de Polignac number, because 195520715 - 2² = 195520711 is a prime.

It is a super-2 number, since 2×195520715² = 76456699988222450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195520711) 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, 1503941 + ... + 1504070.

It is an arithmetic number, because the mean of its divisors is an integer number (31584126).

Almost surely, 2^195520715 is an apocalyptic number.

195520715 is a deficient number, since it is larger than the sum of its proper divisors (57152293).

195520715 is a wasteful number, since it uses less digits than its factorization.

195520715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008029.

The product of its (nonzero) digits is 15750, while the sum is 35.

The square root of 195520715 is about 13982.8722013755. The cubic root of 195520715 is about 580.4047066424.

The spelling of 195520715 in words is "one hundred ninety-five million, five hundred twenty thousand, seven hundred fifteen".