355142477 has 2 divisors, whose sum is σ = 355142478. Its totient is φ = 355142476.

The previous prime is 355142449. The next prime is 355142483. The reversal of 355142477 is 774241553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354418276 + 724201 = 18826^2 + 851^2 .

It is an emirp because it is prime and its reverse (774241553) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355142477 is a prime.

It is a super-2 number, since 2×355142477² = 252252357939391058, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 355142477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355142377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177571238 + 177571239.

It is an arithmetic number, because the mean of its divisors is an integer number (177571239).

Almost surely, 2^355142477 is an apocalyptic number.

It is an amenable number.

355142477 is a deficient number, since it is larger than the sum of its proper divisors (1).

355142477 is an equidigital number, since it uses as much as digits as its factorization.

355142477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 38.

The square root of 355142477 is about 18845.2242491301. The cubic root of 355142477 is about 708.1645888909.

The spelling of 355142477 in words is "three hundred fifty-five million, one hundred forty-two thousand, four hundred seventy-seven".