400245055 has 16 divisors (see below), whose sum is σ = 551315520. Its totient is φ = 273249792.

The previous prime is 400245031. The next prime is 400245067. The reversal of 400245055 is 550542004.

It is a cyclic number.

It is not a de Polignac number, because 400245055 - 2⁵ = 400245023 is a prime.

It is a super-2 number, since 2×400245055² = 320392208103906050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16954 + ... + 32983.

It is an arithmetic number, because the mean of its divisors is an integer number (34457220).

Almost surely, 2^400245055 is an apocalyptic number.

400245055 is a deficient number, since it is larger than the sum of its proper divisors (151070465).

400245055 is a wasteful number, since it uses less digits than its factorization.

400245055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50178.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 400245055 is about 20006.1254369755. The cubic root of 400245055 is about 736.9567340682.

Adding to 400245055 its reverse (550542004), we get a palindrome (950787059).

The spelling of 400245055 in words is "four hundred million, two hundred forty-five thousand, fifty-five".