55417530 has 48 divisors (see below), whose sum is σ = 154720800. Its totient is φ = 12666528.

The previous prime is 55417529. The next prime is 55417561. The reversal of 55417530 is 3571455.

It is a super-2 number, since 2×55417530² = 6142205262601800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17380 + ... + 20319.

It is an arithmetic number, because the mean of its divisors is an integer number (3223350).

Almost surely, 2^55417530 is an apocalyptic number.

55417530 is an abundant number, since it is smaller than the sum of its proper divisors (99303270).

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

55417530 is a wasteful number, since it uses less digits than its factorization.

55417530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37723 (or 37716 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55417530 is about 7444.2951311726. The cubic root of 55417530 is about 381.2551524879.

Adding to 55417530 its reverse (3571455), we get a palindrome (58988985).

The spelling of 55417530 in words is "fifty-five million, four hundred seventeen thousand, five hundred thirty".