55377500 has 60 divisors (see below), whose sum is σ = 128321424. Its totient is φ = 20832000.

The previous prime is 55377481. The next prime is 55377503. The reversal of 55377500 is 577355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55377503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41849 + ... + 43151.

Almost surely, 2^55377500 is an apocalyptic number.

55377500 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 55377500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64160712).

55377500 is an abundant number, since it is smaller than the sum of its proper divisors (72943924).

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

55377500 is a wasteful number, since it uses less digits than its factorization.

55377500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 18375, while the sum is 32.

The square root of 55377500 is about 7441.6060094579. The cubic root of 55377500 is about 381.1633324453.

The spelling of 55377500 in words is "fifty-five million, three hundred seventy-seven thousand, five hundred".