Search a number
55005552 = 24327197277
BaseRepresentation
bin1101000111010…
…1000101110000
310211111120102200
43101311011300
5103040134202
65242543200
71235353020
oct321650560
9124446380
1055005552
112905a538
1216507b00
13b51b884
14743ba80
154c67e1c
hex3475170

55005552 has 120 divisors (see below), whose sum is σ = 177461856. Its totient is φ = 15579648.

The previous prime is 55005521. The next prime is 55005553. The reversal of 55005552 is 25550055.

It is a happy number.

It is a super-2 number, since 2×550055522 = 6051221501649408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005553) 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, 198438 + ... + 198714.

Almost surely, 255005552 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 55005552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88730928).

55005552 is an abundant number, since it is smaller than the sum of its proper divisors (122456304).

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

55005552 is a wasteful number, since it uses less digits than its factorization.

55005552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 55005552 is about 7416.5727934134. The cubic root of 55005552 is about 380.3080420044.

The spelling of 55005552 in words is "fifty-five million, five thousand, five hundred fifty-two".