55017740 has 24 divisors (see below), whose sum is σ = 115966032. Its totient is φ = 21925440.

The previous prime is 55017731. The next prime is 55017757. The reversal of 55017740 is 4771055.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575 + ... + 10505.

It is an arithmetic number, because the mean of its divisors is an integer number (4831918).

Almost surely, 2^55017740 is an apocalyptic number.

It is an amenable number.

55017740 is an abundant number, since it is smaller than the sum of its proper divisors (60948292).

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

55017740 is a wasteful number, since it uses less digits than its factorization.

55017740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10217 (or 10215 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 55017740 is about 7417.3944212237. The cubic root of 55017740 is about 380.3361291819.

Adding to 55017740 its reverse (4771055), we get a palindrome (59788795).

The spelling of 55017740 in words is "fifty-five million, seventeen thousand, seven hundred forty".