400055177 has 2 divisors, whose sum is σ = 400055178. Its totient is φ = 400055176.

The previous prime is 400055119. The next prime is 400055197. The reversal of 400055177 is 771550004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239754256 + 160300921 = 15484^2 + 12661^2 .

It is a cyclic number.

It is not a de Polignac number, because 400055177 - 2⁶ = 400055113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400055107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200027588 + 200027589.

It is an arithmetic number, because the mean of its divisors is an integer number (200027589).

Almost surely, 2^400055177 is an apocalyptic number.

It is an amenable number.

400055177 is a deficient number, since it is larger than the sum of its proper divisors (1).

400055177 is an equidigital number, since it uses as much as digits as its factorization.

400055177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 400055177 is about 20001.3793774329. The cubic root of 400055177 is about 736.8401771381.

The spelling of 400055177 in words is "four hundred million, fifty-five thousand, one hundred seventy-seven".