55451504 has 20 divisors (see below), whose sum is σ = 109260120. Its totient is φ = 27255360.

The previous prime is 55451503. The next prime is 55451507. The reversal of 55451504 is 40515455.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55451503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28427 + ... + 30314.

It is an arithmetic number, because the mean of its divisors is an integer number (5463006).

Almost surely, 2^55451504 is an apocalyptic number.

It is an amenable number.

55451504 is a deficient number, since it is larger than the sum of its proper divisors (53808616).

55451504 is a wasteful number, since it uses less digits than its factorization.

55451504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58808 (or 58802 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 55451504 is about 7446.5766631386. The cubic root of 55451504 is about 381.3330467122. Note that the first 3 decimals are identical.

Adding to 55451504 its reverse (40515455), we get a palindrome (95966959).

It can be divided in two parts, 55451 and 504, that added together give a palindrome (55955).

The spelling of 55451504 in words is "fifty-five million, four hundred fifty-one thousand, five hundred four".