400505151 has 8 divisors (see below), whose sum is σ = 551233024. Its totient is φ = 258390360.

The previous prime is 400505111. The next prime is 400505201. The reversal of 400505151 is 151505004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400505151 - 2⁹ = 400504639 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 (400505111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2153161 + ... + 2153346.

It is an arithmetic number, because the mean of its divisors is an integer number (68904128).

Almost surely, 2^400505151 is an apocalyptic number.

400505151 is a deficient number, since it is larger than the sum of its proper divisors (150727873).

400505151 is a wasteful number, since it uses less digits than its factorization.

400505151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306541.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 400505151 is about 20012.6247903667. The cubic root of 400505151 is about 737.1163346186.

The spelling of 400505151 in words is "four hundred million, five hundred five thousand, one hundred fifty-one".