405055061 has 4 divisors (see below), whose sum is σ = 405100332. Its totient is φ = 405009792.

The previous prime is 405055043. The next prime is 405055069. The reversal of 405055061 is 160550504.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 28462225 + 376592836 = 5335^2 + 19406^2 .

It is a cyclic number.

It is not a de Polignac number, because 405055061 - 2¹⁴ = 405038677 is a prime.

It is a Duffinian number.

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 405055061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405055069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4220 + ... + 28773.

It is an arithmetic number, because the mean of its divisors is an integer number (101275083).

Almost surely, 2^405055061 is an apocalyptic number.

It is an amenable number.

405055061 is a deficient number, since it is larger than the sum of its proper divisors (45271).

405055061 is a wasteful number, since it uses less digits than its factorization.

405055061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45270.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 405055061 is about 20125.9797525487. The cubic root of 405055061 is about 739.8971496941.

The spelling of 405055061 in words is "four hundred five million, fifty-five thousand, sixty-one".