995557815 has 48 divisors (see below), whose sum is σ = 1974842688. Its totient is φ = 454491648.

The previous prime is 995557813. The next prime is 995557817. The reversal of 995557815 is 518755599.

It is a happy number.

995557815 is a `hidden beast` number, since 9 + 9 + 5 + 557 + 81 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (995557813) and next prime (995557817).

It is not a de Polignac number, because 995557815 - 2¹ = 995557813 is a prime.

It is a super-2 number, since 2×995557815² = 1982270726015148450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (995557813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293469 + ... + 296841.

It is an arithmetic number, because the mean of its divisors is an integer number (41142556).

Almost surely, 2^995557815 is an apocalyptic number.

995557815 is a deficient number, since it is larger than the sum of its proper divisors (979284873).

995557815 is a wasteful number, since it uses less digits than its factorization.

995557815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328 (or 4325 counting only the distinct ones).

The product of its digits is 2835000, while the sum is 54.

The square root of 995557815 is about 31552.4613144522. The cubic root of 995557815 is about 998.5170736832.

The spelling of 995557815 in words is "nine hundred ninety-five million, five hundred fifty-seven thousand, eight hundred fifteen".