55377630 has 192 divisors, whose sum is σ = 183845376. Its totient is φ = 11232000.

The previous prime is 55377607. The next prime is 55377631. The reversal of 55377630 is 3677355.

55377630 is a `hidden beast` number, since 553 + 7 + 76 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55377631) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 422665 + ... + 422795.

It is an arithmetic number, because the mean of its divisors is an integer number (957528).

Almost surely, 2^55377630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55377630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91922688).

55377630 is an abundant number, since it is smaller than the sum of its proper divisors (128467746).

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

55377630 is a wasteful number, since it uses less digits than its factorization.

55377630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 36.

The square root of 55377630 is about 7441.6147441264. The cubic root of 55377630 is about 381.1636307084.

The spelling of 55377630 in words is "fifty-five million, three hundred seventy-seven thousand, six hundred thirty".