405051061 has 4 divisors (see below), whose sum is σ = 428877612. Its totient is φ = 381224512.

The previous prime is 405051043. The next prime is 405051077. The reversal of 405051061 is 160150504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 361570225 + 43480836 = 19015^2 + 6594^2 .

It is a cyclic number.

It is not a de Polignac number, because 405051061 - 2⁹ = 405050549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405051001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11913250 + ... + 11913283.

It is an arithmetic number, because the mean of its divisors is an integer number (107219403).

Almost surely, 2^405051061 is an apocalyptic number.

It is an amenable number.

405051061 is a deficient number, since it is larger than the sum of its proper divisors (23826551).

405051061 is a wasteful number, since it uses less digits than its factorization.

405051061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23826550.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 405051061 is about 20125.8803782592. The cubic root of 405051061 is about 739.8947141418.

The spelling of 405051061 in words is "four hundred five million, fifty-one thousand, sixty-one".