355407961 has 6 divisors (see below), whose sum is σ = 356462862. Its totient is φ = 354355200.

The previous prime is 355407959. The next prime is 355408013. The reversal of 355407961 is 169704553.

It can be written as a sum of positive squares in 3 ways, for example, as 72999936 + 282408025 = 8544^2 + 16805^2 .

It is not a de Polignac number, because 355407961 - 2¹ = 355407959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355407931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461785 + ... + 462553.

It is an arithmetic number, because the mean of its divisors is an integer number (59410477).

Almost surely, 2^355407961 is an apocalyptic number.

It is an amenable number.

355407961 is a deficient number, since it is larger than the sum of its proper divisors (1054901).

355407961 is an frugal number, since it uses more digits than its factorization.

355407961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 355407961 is about 18852.2667337379. The cubic root of 355407961 is about 708.3410059177.

The spelling of 355407961 in words is "three hundred fifty-five million, four hundred seven thousand, nine hundred sixty-one".