Search a number
-
+
55088031 = 343427039
BaseRepresentation
bin1101001000100…
…1001110011111
310211122202120110
43102021032133
5103100304111
65244421103
71236145335
oct322111637
9124582513
1055088031
11291064a9
1216547793
13b54a28b
14745db55
154c825a6
hex348939f

55088031 has 8 divisors (see below), whose sum is σ = 75159040. Its totient is φ = 35871192.

The previous prime is 55088027. The next prime is 55088053. The reversal of 55088031 is 13088055.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55088031 - 22 = 55088027 is a prime.

It is a super-2 number, since 2×550880312 = 6069382318913922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55088031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55088071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213391 + ... + 213648.

It is an arithmetic number, because the mean of its divisors is an integer number (9394880).

Almost surely, 255088031 is an apocalyptic number.

55088031 is a deficient number, since it is larger than the sum of its proper divisors (20071009).

55088031 is a wasteful number, since it uses less digits than its factorization.

55088031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427085.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 55088031 is about 7422.1311629477. The cubic root of 55088031 is about 380.4980335038.

The spelling of 55088031 in words is "fifty-five million, eighty-eight thousand, thirty-one".

Divisors: 1 3 43 129 427039 1281117 18362677 55088031