406157755 has 4 divisors (see below), whose sum is σ = 487389312. Its totient is φ = 324926200.

The previous prime is 406157749. The next prime is 406157777. The reversal of 406157755 is 557751604.

It is a happy number.

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

It is not a de Polignac number, because 406157755 - 2¹³ = 406149563 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40615771 + ... + 40615780.

It is an arithmetic number, because the mean of its divisors is an integer number (121847328).

Almost surely, 2^406157755 is an apocalyptic number.

406157755 is a deficient number, since it is larger than the sum of its proper divisors (81231557).

406157755 is an equidigital number, since it uses as much as digits as its factorization.

406157755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81231556.

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 406157755 is about 20153.3559240142. The cubic root of 406157755 is about 740.5679563560.

It can be divided in two parts, 4061 and 57755, that added together give a palindrome (61816).

The spelling of 406157755 in words is "four hundred six million, one hundred fifty-seven thousand, seven hundred fifty-five".