405541655 has 8 divisors (see below), whose sum is σ = 503431200. Its totient is φ = 313245856.

The previous prime is 405541651. The next prime is 405541667. The reversal of 405541655 is 556145504.

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 405541655 - 2² = 405541651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405541651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398275 + ... + 1398564.

It is an arithmetic number, because the mean of its divisors is an integer number (62928900).

Almost surely, 2^405541655 is an apocalyptic number.

405541655 is a deficient number, since it is larger than the sum of its proper divisors (97889545).

405541655 is a wasteful number, since it uses less digits than its factorization.

405541655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796873.

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 405541655 is about 20138.0648275846. The cubic root of 405541655 is about 740.1933114396.

The spelling of 405541655 in words is "four hundred five million, five hundred forty-one thousand, six hundred fifty-five".