10400155 has 8 divisors (see below), whose sum is σ = 12499200. Its totient is φ = 8307456.

The previous prime is 10400153. The next prime is 10400161. The reversal of 10400155 is 55100401.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 10400155 - 2¹ = 10400153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10400153) 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, 3526 + ... + 5764.

It is an arithmetic number, because the mean of its divisors is an integer number (1562400).

Almost surely, 2^10400155 is an apocalyptic number.

10400155 is a deficient number, since it is larger than the sum of its proper divisors (2099045).

10400155 is an equidigital number, since it uses as much as digits as its factorization.

10400155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 10400155 is about 3224.9271309597. The cubic root of 10400155 is about 218.2796610036.

Adding to 10400155 its reverse (55100401), we get a palindrome (65500556).

The spelling of 10400155 in words is "ten million, four hundred thousand, one hundred fifty-five".