55550340 has 48 divisors (see below), whose sum is σ = 172824960. Its totient is φ = 14813280.

The previous prime is 55550317. The next prime is 55550371. The reversal of 55550340 is 4305555.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50896 + ... + 51975.

It is an arithmetic number, because the mean of its divisors is an integer number (3600520).

Almost surely, 2^55550340 is an apocalyptic number.

It is an amenable number.

55550340 is an abundant number, since it is smaller than the sum of its proper divisors (117274620).

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

55550340 is a wasteful number, since it uses less digits than its factorization.

55550340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102889 (or 102881 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55550340 is about 7453.2100466846. The cubic root of 55550340 is about 381.5594731693.

Adding to 55550340 its reverse (4305555), we get a palindrome (59855895).

The spelling of 55550340 in words is "fifty-five million, five hundred fifty thousand, three hundred forty".