356400561 has 8 divisors (see below), whose sum is σ = 518400864. Its totient is φ = 216000320.

The previous prime is 356400559. The next prime is 356400593. The reversal of 356400561 is 165004653.

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 356400561 - 2¹ = 356400559 is a prime.

It is a super-2 number, since 2×356400561² = 254042719762229442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (356400511) 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 7 ways as a sum of consecutive naturals, for example, 5399976 + ... + 5400041.

It is an arithmetic number, because the mean of its divisors is an integer number (64800108).

Almost surely, 2^356400561 is an apocalyptic number.

It is an amenable number.

356400561 is a deficient number, since it is larger than the sum of its proper divisors (162000303).

356400561 is a wasteful number, since it uses less digits than its factorization.

356400561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10800031.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 356400561 is about 18878.5741251822. The cubic root of 356400561 is about 708.9998222862. Note that the first 3 decimals are identical.

The spelling of 356400561 in words is "three hundred fifty-six million, four hundred thousand, five hundred sixty-one".