400151 has 2 divisors, whose sum is σ = 400152. Its totient is φ = 400150.

The previous prime is 400123. The next prime is 400157. The reversal of 400151 is 151004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400151 - 2⁶ = 400087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200075 + 200076.

It is an arithmetic number, because the mean of its divisors is an integer number (200076).

2⁴⁰⁰¹⁵¹ is an apocalyptic number.

400151 is a deficient number, since it is larger than the sum of its proper divisors (1).

400151 is an equidigital number, since it uses as much as digits as its factorization.

400151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 400151 is about 632.5748967514. The cubic root of 400151 is about 73.6899002857.

Adding to 400151 its reverse (151004), we get a palindrome (551155).

The spelling of 400151 in words is "four hundred thousand, one hundred fifty-one".