55165740 has 192 divisors, whose sum is σ = 192675840. Its totient is φ = 11508480.

The previous prime is 55165729. The next prime is 55165757. The reversal of 55165740 is 4756155.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 247269 + ... + 247491.

It is an arithmetic number, because the mean of its divisors is an integer number (1003520).

Almost surely, 2^55165740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55165740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96337920).

55165740 is an abundant number, since it is smaller than the sum of its proper divisors (137510100).

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

55165740 is a wasteful number, since it uses less digits than its factorization.

55165740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 55165740 is about 7427.3642700490. The cubic root of 55165740 is about 380.6768638158.

The spelling of 55165740 in words is "fifty-five million, one hundred sixty-five thousand, seven hundred forty".