55150800 has 60 divisors (see below), whose sum is σ = 176670240. Its totient is φ = 14706560.

The previous prime is 55150763. The next prime is 55150807. The reversal of 55150800 is 805155.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×55150800² = 6083221481280000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55150807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21780 + ... + 24179.

It is an arithmetic number, because the mean of its divisors is an integer number (2944504).

Almost surely, 2^55150800 is an apocalyptic number.

55150800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55150800 is an abundant number, since it is smaller than the sum of its proper divisors (121519440).

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

55150800 is a wasteful number, since it uses less digits than its factorization.

55150800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45980 (or 45969 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 55150800 is about 7426.3584615880. The cubic root of 55150800 is about 380.6424957108.

Adding to 55150800 its reverse (805155), we get a palindrome (55955955).

The spelling of 55150800 in words is "fifty-five million, one hundred fifty thousand, eight hundred".