82195757 has 4 divisors (see below), whose sum is σ = 93938016. Its totient is φ = 70453500.

The previous prime is 82195741. The next prime is 82195769. The reversal of 82195757 is 75759128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82195757 - 2⁴ = 82195741 is a prime.

It is a super-2 number, since 2×82195757² = 13512284937606098, 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 (82195717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5871119 + ... + 5871132.

It is an arithmetic number, because the mean of its divisors is an integer number (23484504).

Almost surely, 2^82195757 is an apocalyptic number.

It is an amenable number.

82195757 is a deficient number, since it is larger than the sum of its proper divisors (11742259).

82195757 is a wasteful number, since it uses less digits than its factorization.

82195757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11742258.

The product of its digits is 176400, while the sum is 44.

The square root of 82195757 is about 9066.1875669986. The cubic root of 82195757 is about 434.7935903631.

The spelling of 82195757 in words is "eighty-two million, one hundred ninety-five thousand, seven hundred fifty-seven".