55910340 has 72 divisors (see below), whose sum is σ = 170247168. Its totient is φ = 14852160.

The previous prime is 55910333. The next prime is 55910341. The reversal of 55910340 is 4301955.

55910340 is a `hidden beast` number, since 559 + 103 + 4 + 0 = 666.

It is a super-2 number, since 2×55910340² = 6251932237831200, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (55910341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68535 + ... + 69345.

It is an arithmetic number, because the mean of its divisors is an integer number (2364544).

Almost surely, 2^55910340 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 55910340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85123584).

55910340 is an abundant number, since it is smaller than the sum of its proper divisors (114336828).

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

55910340 is a wasteful number, since it uses less digits than its factorization.

55910340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1204 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 55910340 is about 7477.3217130200. The cubic root of 55910340 is about 382.3819448564.

The spelling of 55910340 in words is "fifty-five million, nine hundred ten thousand, three hundred forty".