55151403 has 4 divisors (see below), whose sum is σ = 73535208. Its totient is φ = 36767600.

The previous prime is 55151399. The next prime is 55151419. The reversal of 55151403 is 30415155.

55151403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55151403 - 2² = 55151399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55151483) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9191898 + ... + 9191903.

It is an arithmetic number, because the mean of its divisors is an integer number (18383802).

Almost surely, 2^55151403 is an apocalyptic number.

55151403 is a deficient number, since it is larger than the sum of its proper divisors (18383805).

55151403 is a wasteful number, since it uses less digits than its factorization.

55151403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18383804.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 55151403 is about 7426.3990601098. The cubic root of 55151403 is about 380.6438829774.

Adding to 55151403 its reverse (30415155), we get a palindrome (85566558).

The spelling of 55151403 in words is "fifty-five million, one hundred fifty-one thousand, four hundred three".