355681157 has 8 divisors (see below), whose sum is σ = 405573336. Its totient is φ = 309007872.

The previous prime is 355681141. The next prime is 355681163. The reversal of 355681157 is 751186553.

It can be written as a sum of positive squares in 4 ways, for example, as 118243876 + 237437281 = 10874^2 + 15409^2 .

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 355681157 - 2⁴ = 355681141 is a prime.

It is a super-3 number, since 3×355681157³ (a number of 27 digits) contains 333 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 (355681127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804488 + ... + 804929.

It is an arithmetic number, because the mean of its divisors is an integer number (50696667).

Almost surely, 2^355681157 is an apocalyptic number.

It is an amenable number.

355681157 is a deficient number, since it is larger than the sum of its proper divisors (49892179).

355681157 is a wasteful number, since it uses less digits than its factorization.

355681157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609447.

The product of its digits is 126000, while the sum is 41.

The square root of 355681157 is about 18859.5110488051. The cubic root of 355681157 is about 708.5224559579.

The spelling of 355681157 in words is "three hundred fifty-five million, six hundred eighty-one thousand, one hundred fifty-seven".