55037500 has 144 divisors (see below), whose sum is σ = 149615424. Its totient is φ = 17280000.

The previous prime is 55037497. The next prime is 55037513. The reversal of 55037500 is 573055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1487482 + ... + 1487518.

It is an arithmetic number, because the mean of its divisors is an integer number (1038996).

Almost surely, 2^55037500 is an apocalyptic number.

55037500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55037500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74807712).

55037500 is an abundant number, since it is smaller than the sum of its proper divisors (94577924).

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

55037500 is a wasteful number, since it uses less digits than its factorization.

55037500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 25.

The square root of 55037500 is about 7418.7263057751. The cubic root of 55037500 is about 380.3816571780.

The spelling of 55037500 in words is "fifty-five million, thirty-seven thousand, five hundred".