55150404 has 12 divisors (see below), whose sum is σ = 128684304. Its totient is φ = 18383464.

The previous prime is 55150391. The next prime is 55150409. The reversal of 55150404 is 40405155.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×55150404² = 6083134122726432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55150409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2297922 + ... + 2297945.

It is an arithmetic number, because the mean of its divisors is an integer number (10723692).

Almost surely, 2^55150404 is an apocalyptic number.

It is an amenable number.

55150404 is an abundant number, since it is smaller than the sum of its proper divisors (73533900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55150404 is a wasteful number, since it uses less digits than its factorization.

55150404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595874 (or 4595872 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 55150404 is about 7426.3317997515. The cubic root of 55150404 is about 380.6415846646.

Adding to 55150404 its reverse (40405155), we get a palindrome (95555559).

The spelling of 55150404 in words is "fifty-five million, one hundred fifty thousand, four hundred four".