155400005 has 8 divisors (see below), whose sum is σ = 186729624. Its totient is φ = 124153600.

The previous prime is 155399957. The next prime is 155400017. The reversal of 155400005 is 500004551.

It can be written as a sum of positive squares in 4 ways, for example, as 6340324 + 149059681 = 2518^2 + 12209^2 .

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

It is not a de Polignac number, because 155400005 - 2⁸ = 155399749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155400005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16616 + ... + 24225.

It is an arithmetic number, because the mean of its divisors is an integer number (23341203).

Almost surely, 2^155400005 is an apocalyptic number.

It is an amenable number.

155400005 is a deficient number, since it is larger than the sum of its proper divisors (31329619).

155400005 is an equidigital number, since it uses as much as digits as its factorization.

155400005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41607.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 155400005 is about 12465.9538343442. The cubic root of 155400005 is about 537.6302248015.

Adding to 155400005 its reverse (500004551), we get a palindrome (655404556).

The spelling of 155400005 in words is "one hundred fifty-five million, four hundred thousand, five".