355138550 has 24 divisors (see below), whose sum is σ = 711371136. Its totient is φ = 131127840.

The previous prime is 355138507. The next prime is 355138559. The reversal of 355138550 is 55831553.

It is a super-2 number, since 2×355138550² = 252246779392205000, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 355138550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355138559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272534 + ... + 273833.

It is an arithmetic number, because the mean of its divisors is an integer number (29640464).

Almost surely, 2^355138550 is an apocalyptic number.

355138550 is an abundant number, since it is smaller than the sum of its proper divisors (356232586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

355138550 is a wasteful number, since it uses less digits than its factorization.

355138550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546392 (or 546387 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 355138550 is about 18845.1200579885. The cubic root of 355138550 is about 708.1619786966.

The spelling of 355138550 in words is "three hundred fifty-five million, one hundred thirty-eight thousand, five hundred fifty".