55147600 has 30 divisors (see below), whose sum is σ = 132493070. Its totient is φ = 22058880.

The previous prime is 55147571. The next prime is 55147601. The reversal of 55147600 is 674155.

It can be written as a sum of positive squares in 3 ways, for example, as 150544 + 54997056 = 388^2 + 7416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68535 + ... + 69334.

Almost surely, 2^55147600 is an apocalyptic number.

55147600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55147600 is an abundant number, since it is smaller than the sum of its proper divisors (77345470).

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

55147600 is a wasteful number, since it uses less digits than its factorization.

55147600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137887 (or 137876 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 55147600 is about 7426.1430096652. The cubic root of 55147600 is about 380.6351335961.

The spelling of 55147600 in words is "fifty-five million, one hundred forty-seven thousand, six hundred".