55328460 has 72 divisors (see below), whose sum is σ = 170305968. Its totient is φ = 13411200.

The previous prime is 55328443. The next prime is 55328467. The reversal of 55328460 is 6482355.

It is a super-3 number, since 3×55328460³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (55328467) 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, 3450 + ... + 11070.

Almost surely, 2^55328460 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 55328460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85152984).

55328460 is an abundant number, since it is smaller than the sum of its proper divisors (114977508).

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

55328460 is a wasteful number, since it uses less digits than its factorization.

55328460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655 (or 7642 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 55328460 is about 7438.3102919951. The cubic root of 55328460 is about 381.0507851097.

The spelling of 55328460 in words is "fifty-five million, three hundred twenty-eight thousand, four hundred sixty".